JP5165641B2 - Optical component evaluation system - Google Patents

Description

  The present invention relates to an optical component evaluation device, and more particularly to a passive optical component and a spectrum characteristic measuring device for active optical components.

  In wavelength division multiplexing (WDM) networks, the wavelength interval is becoming increasingly dense in order to use the limited wavelength band more effectively, and the optical filters and AWG (Array Waveguide Gratings), which are passive optical components, are narrowed. ing. Therefore, in order to evaluate these optical components, a measuring apparatus capable of measuring an optical spectrum with high wavelength resolution and a wide dynamic range is required.

JP-A-7-55579

  As an apparatus for evaluating active optical components, an optical spectrum analyzer using a dispersion spectroscopy method is used. As a device for evaluating passive optical components, a combination of a broadband light source and the optical spectrum analyzer, or a combination of a wavelength variable light source and an optical power meter is used.

  However, an evaluation apparatus that can measure both active optical components and passive optical components with high wavelength resolution and a wide dynamic range has not been realized.

  Therefore, an object of the present invention is to provide an optical component evaluation apparatus capable of evaluating both active optical components and passive optical components with high wavelength resolution and a wide dynamic range.

  In order to achieve the above object, an optical component evaluation apparatus according to the present invention is an optical component evaluation apparatus (101) for obtaining a spectrum of light to be measured from an optical component, and is a wavelength variable light source that outputs light of an arbitrary wavelength. (11), an output light demultiplexing unit (12) that demultiplexes the output light from the wavelength tunable light source into two light beams, and one output light of the output light demultiplexing unit to the outside of the optical component evaluation apparatus A light output terminal (13) for output, a first light input terminal (14a) and a second light input terminal (14b) to which light to be measured is input from the outside of the optical component evaluation apparatus, and the first light input terminal (14b) Light to be measured is input from the optical input terminal and the other output light of the output light demultiplexing unit is input as local light, and the interference light between the light to be measured and the local light is polarized and separated into two light beams. Optical multiplexing / demultiplexing part (15a) and light from the optical multiplexing / demultiplexing part A first light receiving device (16a) and a second light receiving device (16b) that perform electrical conversion; a third light receiving device (16c) that performs photoelectric conversion of light from the second light input terminal; the first light receiving device; A receiver (21) that amplifies the output signals of the second and third light receivers, an AD converter (22) that converts the signal amplified by the receiver into a digital signal, and an AD of the AD converter A sampling trigger generator (24) for generating a sampling trigger for conversion; a processing unit (23) for obtaining a spectrum from the digital signal of the AD converter; and outputting the spectrum to the outside of the optical component evaluation apparatus; And a wavelength controller (25) that changes the wavelength of the output light from the light source.

By inputting the measured light from the active optical component to the first optical input terminal (14a), the optical spectrum of the measured light from the active optical component can be measured. In addition, the output light from the optical output terminal (13) is input to the passive optical component, and the output light from the passive optical component is input to the second optical input terminal (14b) as the light to be measured. The wavelength characteristics of the light, for example, the wavelength dependence of transmittance and reflectance can be measured.
Here, since the variable wavelength light source (11), the output light demultiplexing unit (12), the optical multiplexing / demultiplexing unit (15a), the first light receiver (16a), and the second light receiver (16b) are provided, the light to be measured Can be detected by heterodyne. Thereby, the optical spectrum of the light to be measured can be measured with high wavelength resolution. Moreover, since the wavelength variable light source (11) and the wavelength controller (25) are provided, the wavelength of the output light can be changed. Thereby, the optical spectrum of the light to be measured can be measured with a wide dynamic range.
Therefore, according to the present invention, it is possible to provide an optical component evaluation apparatus capable of evaluating both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

  In order to achieve the above object, an optical component evaluation apparatus according to the present invention is an optical component evaluation apparatus (102) for obtaining a spectrum of light to be measured from an optical component, and is a wavelength variable light source that outputs light of an arbitrary wavelength. (11), a light output terminal (13) for outputting the output light from the wavelength variable light source to the outside of the optical component evaluation device, and a first light to be measured is input from the outside of the optical component evaluation device. The optical input terminal (14a), the second optical input terminal (14b) to which the output light output from the optical output terminal is input, the measured light is input from the first optical input terminal, and the The output light is input as local light from a second optical input terminal, and an optical multiplexing / demultiplexing unit (15a) for polarizing and separating interference light between the measured light and the local light into two light beams, and the optical multiplexing / demultiplexing unit 1st light receiver (1 which photoelectrically converts light from a) and a second light receiver (16b), a receiver (21) for amplifying output signals of the first light receiver and the second light receiver, and an AD for converting the signal amplified by the receiver to a digital signal A conversion unit (22), a sampling trigger generation unit (24) for generating a sampling trigger for AD conversion of the AD conversion unit, a spectrum is obtained from a digital signal of the AD conversion unit, and the outside of the optical component evaluation apparatus And a wavelength control unit (25) for changing the wavelength of the output light from the wavelength tunable light source.

The output light from the optical output terminal (13) is input to the second optical input terminal (14b), and the measured light from the active optical component is input to the first optical input terminal (14a). The optical spectrum of the light to be measured from the part can be measured. Moreover, the output light from the optical output terminal (13) is input to the passive optical component, and the output light from the passive optical component is input to the first optical input terminal (14a) as the light to be measured. Can be measured.
Here, since the variable wavelength light source (11), the second optical input terminal (14b), the optical multiplexing / demultiplexing unit (15a), the first optical receiver (16a), and the second optical receiver (16b) are provided, Light can be heterodyne detected. Thereby, the optical spectrum of the light to be measured can be measured with high wavelength resolution. Moreover, since the wavelength variable light source (11) and the wavelength controller (25) are provided, the wavelength of the output light can be changed. Thereby, the optical spectrum of the light to be measured can be measured with a wide dynamic range.
Therefore, according to the present invention, it is possible to provide an optical component evaluation apparatus capable of evaluating both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

  In order to achieve the above object, an optical component evaluation apparatus according to the present invention is an optical component evaluation apparatus (103) for obtaining a spectrum of light to be measured from an optical component, and is a variable wavelength light source that outputs light of an arbitrary wavelength. (11), an output light demultiplexing unit (12) that demultiplexes the output light from the wavelength tunable light source into two light beams, and one output light of the output light demultiplexing unit to the outside of the optical component evaluation apparatus An optical output terminal (13) for output, an optical shutter (33) for receiving or outputting the other output light of the output light demultiplexing unit, and light to be measured from outside the optical component evaluation apparatus Is input to the optical input terminal (14), and the measured light is input from the optical input terminal and the output light is input from the optical shutter as local light, and interference light between the measured light and the local light. The optical multiplexing / demultiplexing unit (1 a), the first light receiver (16a) and the second light receiver (16b) for photoelectrically converting the light from the optical multiplexing / demultiplexing unit, and the output signals of the first light receiver and the second light receiver are amplified. A receiver (21), an AD converter (22) that converts the signal amplified by the receiver into a digital signal, and a sampling trigger generator (24) that generates a sampling trigger for AD conversion of the AD converter And a processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device, and a wavelength control unit (25) for changing the wavelength of the output light from the wavelength tunable light source, And an optical shutter control section (26) for opening and closing the optical shutter.

By opening the optical shutter (33) and inputting the measured light from the active optical component to the optical input terminal (14), the optical spectrum of the measured light from the active optical component can be measured. Further, the optical shutter (33) is closed, the output light from the optical output terminal (13) is input to the passive optical component, and the output light from the passive optical component is input to the optical input terminal (14) as light to be measured. Thus, the wavelength characteristics of the passive optical component can be measured.
Here, since the variable wavelength light source (11), the output light demultiplexing unit (12), the optical multiplexing / demultiplexing unit (15a), the first light receiver (16a), and the second light receiver (16b) are provided, the light to be measured Can be detected by heterodyne. Thereby, the optical spectrum of the light to be measured can be measured with high wavelength resolution. Moreover, since the wavelength variable light source (11) and the wavelength controller (25) are provided, the wavelength of the output light can be changed. Thereby, the optical spectrum of the light to be measured can be measured with a wide dynamic range.
Therefore, according to the present invention, it is possible to provide an optical component evaluation apparatus capable of evaluating both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

  In order to achieve the above object, an optical component evaluation apparatus according to the present invention is an optical component evaluation apparatus (104) for obtaining a spectrum of output light from an optical component, and is a wavelength variable light source that outputs light of an arbitrary wavelength ( 11), an output light demultiplexing unit (12) that demultiplexes the output light from the wavelength tunable light source into two light beams, and one output light of the output light demultiplexing unit is output to the outside of the optical component evaluation apparatus. An optical output terminal (13), an optical input terminal (14) to which measured light is input from the outside of the optical component evaluation apparatus, and input light that splits the measured light from the optical input terminal into two light beams. One output light of the demultiplexing unit (31) and the input light demultiplexing unit is input and the other output light of the output light demultiplexing unit is input as local light, and the measured light and the local light Optical multiplexing / demultiplexing unit (15a) for polarization-separating the interference light with light into two light beams The first light receiver (16a) and the second light receiver (16b) that photoelectrically convert light from the optical multiplexing / demultiplexing unit, and the third light receiver that photoelectrically converts the other output light of the input light demultiplexing unit (16c), a receiver (21) for amplifying output signals of the first light receiver, the second light receiver, and the third light receiver, and AD conversion for converting the signal amplified by the receiver to a digital signal A spectrum is obtained from the digital signal of the AD converter, the sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter, and the AD converter. A processing unit (23) for outputting, and a wavelength control unit (25) for changing the wavelength of output light from the wavelength tunable light source are provided.

By inputting the measured light from the active optical component to the optical input terminal (14), the optical spectrum of the measured light from the active optical component can be measured. In addition, the output light from the optical output terminal (13) is input to the passive optical component, and the output light from the passive optical component is input to the optical input terminal (14) as the light to be measured, so that the wavelength characteristics of the passive optical component are obtained. Can be measured.
Here, since the variable wavelength light source (11), the output light demultiplexing unit (12), the optical multiplexing / demultiplexing unit (15a), the first light receiver (16a), and the second light receiver (16b) are provided, the light to be measured Can be detected by heterodyne. Thereby, the optical spectrum of the light to be measured can be measured with high wavelength resolution. Moreover, since the wavelength variable light source (11) and the wavelength controller (25) are provided, the wavelength of the output light can be changed. Thereby, the optical spectrum of the light to be measured can be measured with a wide dynamic range.
Therefore, according to the present invention, it is possible to provide an optical component evaluation apparatus capable of evaluating both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

  In order to achieve the above object, an optical component evaluation apparatus according to the present invention is an optical component evaluation apparatus (105) that obtains a spectrum of output light from an optical component, and is a wavelength variable light source that outputs light of an arbitrary wavelength ( 11), an output light demultiplexing unit (12) that demultiplexes the output light from the wavelength tunable light source into two light beams, and one output light of the output light demultiplexing unit is output to the outside of the optical component evaluation apparatus. An optical output terminal (13), an optical input terminal (14) to which light to be measured is input from the outside of the optical component evaluation device, and light to be measured from the optical input terminal. An input optical switch (32) that selectively outputs to one of them, and light to be measured from one output port of the input optical switch is input, and the other output light of the output optical demultiplexing unit is local light And the light to be measured and the An optical multiplexing / demultiplexing unit (15a) for polarizing and separating the interference light with the local light into two light fluxes, and a first light receiving unit (16a) and a second light receiving unit (16b) for photoelectrically converting the light from the optical multiplexing / demultiplexing unit The third light receiver (16c) that photoelectrically converts the light to be measured from the other output port of the input optical switch, and the output signals of the first light receiver, the second light receiver, and the third light receiver A receiving unit (21) for amplifying, an AD converting unit (22) for converting a signal amplified by the receiving unit into a digital signal, and a sampling trigger generating unit (for generating a sampling trigger for AD conversion of the AD converting unit) 24), a processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device, and a wavelength control unit (25) for changing the wavelength of the output light from the wavelength variable light source ) And the above Input optical switch control section for switching the output port of the power light switch (27), characterized in that it comprises a.

By setting the output port of the input optical switch (32) to the optical multiplexing / demultiplexing unit (15a) side and inputting the measured light from the active optical component to the optical input terminal (14), the measured light from the active optical component The optical spectrum of light can be measured. Also, the output port of the input optical switch (32) is set to the third light receiver (16c) side, the output light from the optical output terminal (13) is input to the passive optical component, and the output light from the passive optical component is By inputting the light to be measured to the optical input terminal (14), the wavelength characteristics of the passive optical component can be measured.
Here, since the variable wavelength light source (11), the output light demultiplexing unit (12), the optical multiplexing / demultiplexing unit (15a), the first light receiver (16a), and the second light receiver (16b) are provided, the light to be measured Can be detected by heterodyne. Thereby, the optical spectrum of the light to be measured can be measured with high wavelength resolution. Moreover, since the wavelength variable light source (11) and the wavelength controller (25) are provided, the wavelength of the output light can be changed. Thereby, the optical spectrum of the light to be measured can be measured with a wide dynamic range.
Therefore, according to the present invention, it is possible to provide an optical component evaluation apparatus capable of evaluating both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

  In order to achieve the above object, an optical component evaluation apparatus according to the present invention is an optical component evaluation apparatus (106) that obtains a spectrum of output light from an optical component, and is a wavelength variable light source that outputs light of an arbitrary wavelength ( 11), an output optical switch (34) that receives output light from the wavelength tunable light source and selectively outputs it to one of the two output ports, and outputs light from one output port of the output optical switch. A light output terminal (13) for outputting to the outside of the optical component evaluation device, a light input terminal (14) for receiving light to be measured from the outside of the optical component evaluation device, and light to be measured from the light input terminal. An optical multiplexing / demultiplexing unit (15a) that receives and outputs output light as local light from the other output port of the output optical switch, and polarizes and separates interference light between the measured light and the local light into two light beams. , A first light receiver (16a) and a second light receiver (16b) that photoelectrically convert light from the optical multiplexing / demultiplexing section, and a receiver section that amplifies output signals of the first light receiver and the second light receiver ( 21), an AD converter (22) that converts the signal amplified by the receiver into a digital signal, a sampling trigger generator (24) that generates a sampling trigger for AD conversion of the AD converter, A processing unit (23) that obtains a spectrum from the digital signal of the AD conversion unit and outputs the spectrum to the outside of the optical component evaluation apparatus, a wavelength control unit (25) that changes the wavelength of output light from the wavelength variable light source, and the output And an output optical switch control unit (28) for switching an output port of the optical switch.

By setting the output port of the output optical switch (34) to the optical multiplexing / demultiplexing unit (15a) side and inputting the measured light from the active optical component to the optical input terminal (14), the measured optical component from the active optical component is obtained. The optical spectrum of light can be measured. Further, the output port of the output optical switch (34) is set to the optical output terminal (13) side, the output light from the optical output terminal (13) is input to the passive optical component, and the output light from the passive optical component is received. By inputting the measurement light to the optical input terminal (14), the wavelength characteristics of the passive optical component can be measured.
Here, since the variable wavelength light source (11), the output optical switch (34), the optical multiplexing / demultiplexing unit (15a), the first light receiver (16a), and the second light receiver (16b) are provided, the light to be measured is heterodyne. Can be detected. Thereby, the optical spectrum of the light to be measured can be measured with high wavelength resolution. Moreover, since the wavelength variable light source (11) and the wavelength controller (25) are provided, the wavelength of the output light can be changed. Thereby, the optical spectrum of the light to be measured can be measured with a wide dynamic range.
Therefore, according to the present invention, it is possible to provide an optical component evaluation apparatus capable of evaluating both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

  In order to achieve the above object, an optical component evaluation apparatus according to the present invention is an optical component evaluation apparatus (107) for obtaining a spectrum of output light from an optical component, and is a wavelength variable light source that outputs light of an arbitrary wavelength ( 11), an output light demultiplexing unit (12) that demultiplexes the output light from the wavelength tunable light source into two light beams, and one output light of the output light demultiplexing unit is output to the outside of the optical component evaluation apparatus. An optical output terminal (13), a first optical input terminal (14a) and a second optical input terminal (14b) to which measured light is input from the outside of the optical component evaluation apparatus, and the first light An optical multiplexing unit (15b) that receives the measured light from the input terminal and receives the other output light of the output light demultiplexing unit as local light, and causes the measured light and the local light to interfere with each other; The output optical demultiplexing unit (12) and the optical multiplexing unit (15b) Between the output optical demultiplexing unit (12) and the optical output terminal (13), and between the first optical input terminal (14a) and the optical multiplexing unit (15b). A polarization scrambler disposed in any one of an optical path and an optical path between the wavelength tunable light source (11) and the output light demultiplexing unit (12) to eliminate the polarization dependence of the local light or the measured light A bra (35), a first light receiver (16a) that photoelectrically converts light from the optical multiplexing unit, a second light receiver (16b) that photoelectrically converts light from the second light input terminal, A receiver (21) that amplifies the output signals of the first light receiver and the second light receiver, an AD converter (22) that converts the signal amplified by the receiver into a digital signal, and an AD of the AD converter Sampling trigger generation to generate sampling trigger for conversion (24), a processing unit (23) that obtains a spectrum from the digital signal of the AD conversion unit and outputs the spectrum to the outside of the optical component evaluation device, and a wavelength control unit that changes the wavelength of output light from the wavelength variable light source ( 25).

By inputting the measured light from the active optical component to the first optical input terminal (14a), the optical spectrum of the measured light from the active optical component can be measured. In addition, the output light from the optical output terminal (13) is input to the passive optical component, and the output light from the passive optical component is input to the second optical input terminal (14b) as the light to be measured. Can be measured.
Here, since the variable wavelength light source (11), the output light demultiplexing unit (12), the polarization scrambler (35), the optical multiplexing unit (15b), and the first light receiver (16a) are provided, Heterodyne detection can be performed. Thereby, the optical spectrum of the light to be measured can be measured with high wavelength resolution. Moreover, since the wavelength variable light source (11) and the wavelength controller (25) are provided, the wavelength of the output light can be changed. Thereby, the optical spectrum of the light to be measured can be measured with a wide dynamic range.
Therefore, according to the present invention, it is possible to provide an optical component evaluation apparatus capable of evaluating both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

  In order to achieve the above object, an optical component evaluation apparatus according to the present invention is an optical component evaluation apparatus (108) for obtaining a spectrum of light to be measured from an optical component, and is a wavelength variable light source that outputs light of an arbitrary wavelength. (11), a light output terminal (13) for outputting the output light from the wavelength variable light source to the outside of the optical component evaluation device, and a first light to be measured is input from the outside of the optical component evaluation device. The optical input terminal (14a), the second optical input terminal (14b) to which the output light output from the optical output terminal is input, the measured light is input from the first optical input terminal, and the The output light is input as local light from a second optical input terminal, and an optical multiplexing unit (15b) that causes the measured light and the local light to interfere with each other, the second optical input terminal (14b), and the optical coupling. The optical path between the wave sections (15b), and Arranged in one of an optical path between the wavelength tunable light source (11) and the optical output terminal (13) and an optical path between the first optical input terminal (14a) and the optical multiplexing unit (15b), A polarization scrambler (35) that eliminates the polarization dependence of the local light or the light to be measured, a light receiver (16) that photoelectrically converts light from the optical multiplexing unit, and an output signal of the light receiver A receiving unit (21) for amplifying, an AD converting unit (22) for converting a signal amplified by the receiving unit into a digital signal, and a sampling trigger generating unit (for generating a sampling trigger for AD conversion of the AD converting unit) 24), a processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device, and a wavelength control unit (25) for changing the wavelength of the output light from the wavelength variable light source Characterized in that it comprises a and.

The output light from the optical output terminal (13) is input to the second optical input terminal (14b), and the measured light from the active optical component is input to the first optical input terminal (14a). The optical spectrum of the light to be measured from the part can be measured. Moreover, the output light from the optical output terminal (13) is input to the passive optical component, and the output light from the passive optical component is input to the first optical input terminal (14a) as the light to be measured. Can be measured.
Here, since the variable wavelength light source (11), the second optical input terminal (14b), the polarization scrambler (35), the optical multiplexing unit (15b), and the light receiver (16) are provided, the light to be measured is heterodyne. Can be detected. Thereby, the optical spectrum of the light to be measured can be measured with high wavelength resolution. Moreover, since the wavelength variable light source (11) and the wavelength controller (25) are provided, the wavelength of the output light can be changed. Thereby, the optical spectrum of the light to be measured can be measured with a wide dynamic range.
Therefore, according to the present invention, it is possible to provide an optical component evaluation apparatus capable of evaluating both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

  In order to achieve the above object, an optical component evaluation apparatus according to the present invention is an optical component evaluation apparatus (109) for obtaining a spectrum of light to be measured from an optical component, and is a wavelength variable light source that outputs light of an arbitrary wavelength. (11), an output light demultiplexing unit (12) that demultiplexes the output light from the wavelength tunable light source into two light beams, and one output light of the output light demultiplexing unit to the outside of the optical component evaluation apparatus An optical output terminal (13) for output, an optical shutter (33) for receiving or outputting the other output light of the output light demultiplexing unit, and light to be measured from outside the optical component evaluation apparatus The light to be measured is input from the light input terminal (14) and the light input terminal, and the output light is input from the optical shutter as local light, causing the light to be measured and the local light to interfere with each other. An optical multiplexer (15b) and the output light; An optical path between the wave section (12) and the optical multiplexing section (15b), an optical path between the output optical demultiplexing section (12) and the optical output terminal (13), and the optical input terminal (14). Arranged in one of the optical path between the optical multiplexing unit (15b) and the optical path between the wavelength tunable light source (11) and the output optical demultiplexing unit (12), the local light or the measured light A polarization scrambler (35) that eliminates polarization dependence, a light receiver (16) that photoelectrically converts light from the optical multiplexer, and a receiver (21) that amplifies the output signal of the light receiver; An AD converter (22) that converts the signal amplified by the receiver into a digital signal, a sampling trigger generator (24) that generates a sampling trigger for AD conversion of the AD converter, and an AD converter Obtain spectrum from digital signal A processing unit (23) that outputs to the outside of the optical component evaluation device, a wavelength control unit (25) that changes the wavelength of output light from the wavelength variable light source, and an optical shutter control unit (26) that opens and closes the optical shutter And.

By opening the optical shutter (33) and inputting the measured light from the active optical component to the optical input terminal (14), the optical spectrum of the measured light from the active optical component can be measured. Further, the optical shutter (33) is closed, the output light from the optical output terminal (13) is input to the passive optical component, and the output light from the passive optical component is input to the optical input terminal (14) as light to be measured. Thus, the wavelength characteristics of the passive optical component can be measured.
Here, since the tunable light source (11), the output light demultiplexing unit (12), the polarization scrambler (35), the optical multiplexing unit (15b), and the light receiver (16) are provided, the measured light is heterodyne detected. can do. Thereby, the optical spectrum of the light to be measured can be measured with high wavelength resolution. Moreover, since the wavelength variable light source (11) and the wavelength controller (25) are provided, the wavelength of the output light can be changed. Thereby, the optical spectrum of the light to be measured can be measured with a wide dynamic range.
Therefore, according to the present invention, it is possible to provide an optical component evaluation apparatus capable of evaluating both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

  In order to achieve the above object, an optical component evaluation apparatus according to the present invention is an optical component evaluation apparatus (110) for obtaining a spectrum of output light from an optical component, and is a tunable light source that outputs light of an arbitrary wavelength (110). 11), an output light demultiplexing unit (12) that demultiplexes the output light from the wavelength tunable light source into two light beams, and one output light of the output light demultiplexing unit is output to the outside of the optical component evaluation apparatus. An optical output terminal (13), an optical input terminal (14) to which measured light is input from the outside of the optical component evaluation apparatus, and input light that splits the measured light from the optical input terminal into two light beams. One output light of the demultiplexing unit (31) and the input light demultiplexing unit is input and the other output light of the output light demultiplexing unit is input as local light, and the measured light and the local light An optical multiplexing unit (15b) that interferes with light, and the output optical demultiplexing unit 12) and an optical path between the optical multiplexing unit (15b), an optical path between the output optical demultiplexing unit (12) and the optical output terminal (13), and the optical input terminal (14) and the input light. An optical path between the demultiplexing unit (31), an optical path between the input optical demultiplexing unit (31) and the optical multiplexing unit (15b), and the variable wavelength light source (11) and the output optical demultiplexing unit ( 12) and a polarization scrambler (35) that eliminates the polarization dependence of the local light or the light to be measured, and a light that photoelectrically converts light from the optical multiplexing unit. 1 light receiver (16a), a second light receiver (16b) that photoelectrically converts the other output light of the input light demultiplexing unit, and amplifies output signals of the first light receiver and the second light receiver A receiver (21) and AD conversion for converting the signal amplified by the receiver into a digital signal (22), a sampling trigger generation unit (24) for generating a sampling trigger for AD conversion of the AD conversion unit, a spectrum is obtained from the digital signal of the AD conversion unit, and output to the outside of the optical component evaluation apparatus And a wavelength controller (25) that changes the wavelength of the output light from the wavelength tunable light source.

By inputting the measured light from the active optical component to the optical input terminal (14), the optical spectrum of the measured light from the active optical component can be measured. In addition, the output light from the optical output terminal (13) is input to the passive optical component, and the output light from the passive optical component is input to the optical input terminal (14) as the light to be measured, so that the wavelength characteristics of the passive optical component are obtained. Can be measured.
Here, since the variable wavelength light source (11), the output light demultiplexing unit (12), the polarization scrambler (35), the optical multiplexing unit (15b), and the first light receiver (16a) are provided, Heterodyne detection can be performed. Thereby, the optical spectrum of the light to be measured can be measured with high wavelength resolution. Moreover, since the wavelength variable light source (11) and the wavelength controller (25) are provided, the wavelength of the output light can be changed. Thereby, the optical spectrum of the light to be measured can be measured with a wide dynamic range.
Therefore, according to the present invention, it is possible to provide an optical component evaluation apparatus capable of evaluating both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

  In order to achieve the above object, an optical component evaluation apparatus according to the present invention is an optical component evaluation apparatus (111) for obtaining a spectrum of output light from an optical component, and is a tunable light source that outputs light of an arbitrary wavelength ( 11), an output light demultiplexing unit (12) that demultiplexes the output light from the wavelength tunable light source into two light beams, and one output light of the output light demultiplexing unit is output to the outside of the optical component evaluation apparatus. An optical output terminal (13), an optical input terminal (14) to which light to be measured is input from the outside of the optical component evaluation device, and light to be measured from the optical input terminal. An input optical switch (32) that selectively outputs to one of them, and light to be measured from one output port of the input optical switch is input, and the other output light of the output optical demultiplexing unit is local light And the light to be measured and the An optical multiplexing unit (15b) that interferes with the local light, an optical path between the output optical demultiplexing unit (12) and the optical multiplexing unit (15b), and the output optical demultiplexing unit (12) and the optical output An optical path between the terminal (13), an optical path between the optical input terminal (14) and the input optical switch (32), and an optical path between the input optical switch (32) and the optical multiplexing unit (15b). And a polarization scrambler that is disposed in any one of the optical paths between the wavelength tunable light source (11) and the output light demultiplexing unit (12) and eliminates the polarization dependence of the local light or the measured light. (35), a first light receiver (16a) that photoelectrically converts light from the optical multiplexing unit, and a second light receiver (16b) that photoelectrically converts light to be measured from the other output port of the input optical switch. ) And the output signals of the first and second light receivers. A receiver (21) for amplifying the signal, an AD converter (22) for converting the signal amplified by the receiver into a digital signal, and a sampling trigger generator for generating a sampling trigger for AD conversion of the AD converter (24), a processing unit (23) that obtains a spectrum from the digital signal of the AD conversion unit and outputs the spectrum to the outside of the optical component evaluation device, and a wavelength control unit that changes the wavelength of output light from the wavelength variable light source ( 25) and an input optical switch controller (27) for switching the output port of the input optical switch.

By setting the output port of the input optical switch (32) to the optical multiplexing unit (15b) side and inputting the measured light from the active optical component to the optical input terminal (14), the measured light from the active optical component The optical spectrum of can be measured. Also, the output port of the input optical switch (32) is set to the second light receiver (16b) side, the output light from the optical output terminal (13) is input to the passive optical component, and the output light from the passive optical component is By inputting the light to be measured to the optical input terminal (14), the wavelength characteristics of the passive optical component can be measured.
Here, since the variable wavelength light source (11), the output light demultiplexing unit (12), the polarization scrambler (35), the optical multiplexing unit (15b), and the first light receiver (16a) are provided, Heterodyne detection can be performed. Thereby, the optical spectrum of the light to be measured can be measured with high wavelength resolution. Moreover, since the wavelength variable light source (11) and the wavelength controller (25) are provided, the wavelength of the output light can be changed. Thereby, the optical spectrum of the light to be measured can be measured with a wide dynamic range.
Therefore, according to the present invention, it is possible to provide an optical component evaluation apparatus capable of evaluating both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

  In order to achieve the above object, an optical component evaluation apparatus according to the present invention is an optical component evaluation apparatus (112) for obtaining a spectrum of output light from an optical component, and is a tunable light source that outputs light of an arbitrary wavelength ( 11), an output optical switch (34) that receives output light from the wavelength tunable light source and selectively outputs it to one of the two output ports, and outputs light from one output port of the output optical switch. A light output terminal (13) for outputting to the outside of the optical component evaluation device, a light input terminal (14) for receiving light to be measured from the outside of the optical component evaluation device, and light to be measured from the light input terminal. And an optical multiplexing unit (15b) for allowing the output light to be input as local light from the other output port of the output optical switch and causing the light to be measured and the local light to interfere with each other, and the output optical switch. (34) and the optical multiplexer (15b), the optical path between the output optical switch (34) and the optical output terminal (13), and the optical input terminal (14) and the optical multiplexer. (15b) and the optical path between the wavelength tunable light source (11) and the output optical switch (34) to eliminate the polarization dependence of the local light or the measured light A polarization scrambler (35), a light receiver (16) that photoelectrically converts light from the optical multiplexing unit, a reception unit (21) that amplifies the output signal of the light receiver, and the reception unit A spectrum is obtained from an AD converter (22) that converts a signal into a digital signal, a sampling trigger generator (24) that generates a sampling trigger for AD conversion of the AD converter, and a digital signal of the AD converter A processing unit (23) that outputs to the outside of the optical component evaluation device, a wavelength control unit (25) that changes the wavelength of output light from the wavelength variable light source, and an output optical switch control that switches an output port of the output optical switch Part (28).

By setting the output port of the output optical switch (34) to the optical multiplexing unit (15b) side and inputting the measured light from the active optical component to the optical input terminal (14), the measured light from the active optical component The optical spectrum of can be measured. Further, the output port of the output optical switch (34) is set to the optical output terminal (13) side, the output light from the optical output terminal (13) is input to the passive optical component, and the output light from the passive optical component is received. By inputting the measurement light to the optical input terminal (14), the wavelength characteristics of the passive optical component can be measured.
Here, since the tunable light source (11), the output optical switch (34), the polarization scrambler (35), the optical multiplexing unit (15b), and the light receiver (16) are provided, heterodyne detection of the measured light is performed. Can do. Thereby, the optical spectrum of the light to be measured can be measured with high wavelength resolution. Moreover, since the wavelength variable light source (11) and the wavelength controller (25) are provided, the wavelength of the output light can be changed. Thereby, the optical spectrum of the light to be measured can be measured with a wide dynamic range.
Therefore, according to the present invention, it is possible to provide an optical component evaluation apparatus capable of evaluating both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

  The above inventions can be combined as much as possible.

  ADVANTAGE OF THE INVENTION According to this invention, the optical component evaluation apparatus which can evaluate the optical component of both an active optical component and a passive optical component with high wavelength resolution and a wide dynamic range can be provided.

It is a schematic block diagram of the optical component evaluation apparatus which concerns on Embodiment 1. FIG. It is a schematic block diagram of the optical component evaluation apparatus which concerns on Embodiment 2. FIG. It is a schematic block diagram of the optical component evaluation apparatus which concerns on Embodiment 3. It is a schematic block diagram of the optical component evaluation apparatus which concerns on Embodiment 4. It is a schematic block diagram of the optical component evaluation apparatus which concerns on Embodiment 5. It is a schematic block diagram of the optical component evaluation apparatus which concerns on Embodiment 6. It is a schematic block diagram of the optical component evaluation apparatus which concerns on Embodiment 7. It is a schematic block diagram of the optical component evaluation apparatus which concerns on Embodiment 8. 10 is a schematic configuration diagram of an optical component evaluation device according to Embodiment 9. FIG. It is a schematic block diagram of the optical component evaluation apparatus which concerns on Embodiment 10. FIG. It is a schematic block diagram of the optical component evaluation apparatus which concerns on Embodiment 11. FIG. It is a schematic block diagram of the optical component evaluation apparatus which concerns on Embodiment 12.

  Embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below are examples of the present invention, and the present invention is not limited to the following embodiments. In the present specification and drawings, the same reference numerals denote the same components.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram of an optical component evaluation apparatus according to the present embodiment. The optical component evaluation apparatus 101 according to the embodiment of the present invention includes a wavelength tunable light source 11, an output light demultiplexing unit 12, a light output terminal 13, a first light input terminal 14a, and a second light input terminal 14b. The optical multiplexer / demultiplexer 15a, the first and second light receivers 16a and 16b, the third light receiver 16c, the receiver 21, the AD converter 22, the sampling trigger generator 24, and the processor 23. And a wavelength control unit 25.

  A case where the optical component is an active optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. From the outside of the optical component evaluation apparatus 101, the light to be measured from the active optical component is input to the first optical input terminal 14a. The optical multiplexing / demultiplexing unit 15a receives the measured light from the first optical input terminal 14a, and the other output light of the output optical demultiplexing unit 12 is input as the local light. Interference light with light is polarized and separated into two light beams. Here, polarization separation is performed using, for example, a polarization beam splitter (PBS). The first light receiver 16a and the second light receiver 16b photoelectrically convert the interference light from the optical multiplexing / demultiplexing unit 15a.

  A case where the optical component is a passive optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. The optical output terminal 13 outputs one output light of the output optical demultiplexing unit 12 to the outside of the optical component evaluation apparatus 101. The output light output from the optical output terminal 13 is input to the passive optical component. And the output light from a passive optical component is input into the 2nd optical input terminal 14b from the exterior of the optical component evaluation apparatus 101 as to-be-measured light. The third light receiver 16c photoelectrically converts the light to be measured from the second optical input terminal 14b.

  The receiving unit 21 amplifies output signals from the first light receiver 16a, the second light receiver 16b, and the third light receiver 16c. The sampling trigger generator 24 generates a sampling trigger for AD conversion of the AD converter 22. The AD converter 22 converts the signal amplified by the receiver 21 into a digital signal at the timing of the sampling trigger generator 24. The processing unit 23 obtains a spectrum from the digital signal of the AD conversion unit 22 and outputs it to the outside of the optical component evaluation apparatus 101.

  The spectrum of the light to be measured from the optical component can be obtained by detecting the digital signal obtained by the AD conversion unit 22 while changing the wavelength of the output light from the wavelength variable light source 11 by the wavelength control unit 25.

  With the above configuration, the output spectrum of the active optical component such as a laser diode is input to the first optical input terminal 14a, so that the emission spectrum can be measured with a very high resolution by heterodyne detection. Further, by connecting a passive optical component such as an optical filter to the optical output terminal 13 and the second optical input terminal 14b, it is possible to measure the light transmission characteristics with ultra high resolution. Therefore, the optical component evaluation apparatus 101 can evaluate both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range.

(Embodiment 2)
FIG. 2 is a schematic configuration diagram of the optical component evaluation apparatus according to the present embodiment. The optical component evaluation apparatus 102 includes a variable wavelength light source 11, a light output terminal 13, a first light input terminal 14a and a second light input terminal 14b, an optical multiplexing / demultiplexing unit 15a, a first light receiver 16a, and a first light receiver 16a. 2 light receiver 16b, receiving part 21, AD conversion part 22, sampling trigger generation part 24, processing part 23, and wavelength control part 25 are provided.

  A case where the optical component is an active optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The optical output terminal 13 outputs the output light from the wavelength variable light source 11 to the outside of the optical component evaluation apparatus 102. The output light output from the optical output terminal 13 is input to the second optical input terminal 14b from the outside of the optical component evaluation apparatus 102. Light to be measured from the active optical component is input to the first optical input terminal 14 a from the outside of the optical component evaluation apparatus 102. The optical multiplexing / demultiplexing unit 15a receives the measured light from the first optical input terminal 14a and receives the output light as the local light from the second optical input terminal 14b, thereby interfering between the measured light and the local light. The light is polarized and separated into two light beams. The first light receiver 16a and the second light receiver 16b photoelectrically convert the interference light from the optical multiplexing / demultiplexing unit 15a.

  A case where the optical component is a passive optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The optical output terminal 13 outputs the output light from the wavelength variable light source 11 to the outside of the optical component evaluation apparatus 102. The output light output from the optical output terminal 13 is input to the passive optical component. And the output light from a passive optical component is input into the 1st optical input terminal 14a from the exterior of the optical component evaluation apparatus 102 as to-be-measured light. The optical multiplexing / demultiplexing unit 15a causes the light to be measured from the first optical input terminal 14a to be incident on at least one of the first light receiver 16a and the second light receiver 16b. At least one of the first light receiver 16a and the second light receiver 16b photoelectrically converts the light to be measured from the optical multiplexing / demultiplexing unit 15a.

  The receiver 21 amplifies output signals from the first light receiver 16a and the second light receiver 16b. The functions and operations of the AD conversion unit 22, the sampling trigger generation unit 24, the processing unit 23, and the wavelength control unit 25 are the same as those in the first embodiment.

  With the above configuration, the optical component evaluation apparatus 102 can evaluate both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range. Here, since the optical component evaluation apparatus 102 can use the output light from the wavelength tunable light source 11 as it is, the output light intensity of the wavelength tunable light source 11 can be made lower than that in the first embodiment. In addition, since the optical component evaluation apparatus 102 has fewer light receivers than the first embodiment, the configuration can be simplified.

(Embodiment 3)
FIG. 3 is a schematic configuration diagram of the optical component evaluation apparatus according to the present embodiment. The optical component evaluation apparatus 103 according to the embodiment of the present invention includes a wavelength tunable light source 11, an output light demultiplexing unit 12, an optical output terminal 13, a light input terminal 14, an optical multiplexing / demultiplexing unit 15a, and a first light receiving unit. 16a and second light receiver 16b, receiver 21, AD converter 22, sampling trigger generator 24, processor 23, wavelength controller 25, optical shutter 33, optical shutter controller 26 .

  A case where the optical component is an active optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. The optical shutter control unit 26 controls the optical shutter 33 to open the optical shutter 33. The optical shutter 33 receives the other output light of the output light demultiplexing unit 12 and transmits the output light. Light to be measured from the active optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 103. The optical multiplexing / demultiplexing unit 15a receives the measured light from the optical input terminal 14 and the output light from the optical shutter 33 as local light, and polarization-separates the interference light between the measured light and the local light into two light beams. To do. The first light receiver 16a and the second light receiver 16b photoelectrically convert the interference light from the optical multiplexing / demultiplexing unit 15a.

  A case where the optical component is a passive optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. The optical output terminal 13 outputs one output light of the output optical demultiplexing unit 12 to the outside of the optical component evaluation apparatus 103. The optical shutter control unit 26 controls the optical shutter 33 to close the optical shutter 33. The optical shutter 33 receives the other output light of the output light demultiplexing unit 12 and blocks the output light. The output light output from the optical output terminal 13 is input to the passive optical component. Output light from the passive optical component is input to the optical input terminal 14 as measured light from the outside of the optical component evaluation apparatus 103. The optical multiplexing / demultiplexing unit 15a causes the measured light from the optical input terminal 14 to enter at least one of the first light receiver 16a and the second light receiver 16b. At least one of the first light receiver 16a and the second light receiver 16b photoelectrically converts the light to be measured from the optical multiplexing / demultiplexing unit 15a.

  The receiver 21 amplifies output signals from the first light receiver 16a and the second light receiver 16b. The functions and operations of the AD conversion unit 22, the sampling trigger generation unit 24, the processing unit 23, and the wavelength control unit 25 are the same as those in the first embodiment.

  With the above configuration, the optical component evaluation apparatus 103 can evaluate both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range. Here, in the optical component evaluation apparatus 103, since the number of light receivers is smaller than that in the first embodiment, the configuration can be simplified. Moreover, since there is one optical input terminal, handling becomes easy.

(Embodiment 4)
FIG. 4 is a schematic configuration diagram of the optical component evaluation apparatus according to the present embodiment. The optical component evaluation apparatus 104 according to the embodiment of the present invention includes a wavelength tunable light source 11, an output optical demultiplexing unit 12, an optical output terminal 13, an optical input terminal 14, an input optical demultiplexing unit 31, and optical multiplexing / demultiplexing. Wave unit 15a, first light receiver 16a and second light receiver 16b, third light receiver 16c, receiver 21, AD converter 22, sampling trigger generator 24, processor 23, wavelength control Unit 25.

  A case where the optical component is an active optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. Light to be measured from the active optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 104. The input light demultiplexing unit 31 demultiplexes the measured light from the light input terminal 14 into two light beams. The optical multiplexing / demultiplexing unit 15a receives the measured light that is one output light of the input optical demultiplexing unit 31, and the other output light of the output optical demultiplexing unit 12 is input as local light. The interference light between the light and the local light is polarized and separated into two light beams. The first light receiver 16a and the second light receiver 16b photoelectrically convert the interference light from the optical multiplexing / demultiplexing unit 15a.

  A case where the optical component is a passive optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. The optical output terminal 13 outputs one output light of the output optical demultiplexing unit 12 to the outside of the optical component evaluation apparatus 104. The output light output from the optical output terminal 13 is input to the passive optical component. Then, output light from the passive optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 104 as light to be measured. The input light demultiplexing unit 31 demultiplexes the measured light from the light input terminal 14 into two light beams. The third light receiver 16 c photoelectrically converts the measured light that is the other output light of the input light demultiplexing unit 31.

  The receiving unit 21 amplifies output signals from the first light receiver 16a, the second light receiver 16b, and the third light receiver 16c. The functions and operations of the AD conversion unit 22, the sampling trigger generation unit 24, the processing unit 23, and the wavelength control unit 25 are the same as those in the first embodiment.

  With the above configuration, the optical component evaluation apparatus 104 can evaluate both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range. Here, since the optical component evaluation apparatus 104 has one optical input terminal, it is easy to handle.

(Embodiment 5)
FIG. 5 is a schematic configuration diagram of the optical component evaluation apparatus according to the present embodiment. An optical component evaluation apparatus 105 according to an embodiment of the present invention includes a wavelength tunable light source 11, an output optical demultiplexing unit 12, an optical output terminal 13, an optical input terminal 14, an input optical switch 32, and an optical multiplexing / demultiplexing unit. 15a, the first light receiver 16a and the second light receiver 16b, the third light receiver 16c, the receiver 21, the AD converter 22, the sampling trigger generator 24, the processor 23, and the wavelength controller 25. And an input optical switch control unit 27.

  A case where the optical component is an active optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. Light to be measured from the active optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 105. The input optical switch control unit 27 switches the output port of the input optical switch 32 and sets it to the optical multiplexing / demultiplexing unit 15a side of the two output ports. The input optical switch 32 receives the measured light from the optical input terminal 14 and selectively outputs it to the optical multiplexing / demultiplexing unit 15a side of the two output ports. The optical multiplexing / demultiplexing unit 15a receives the measured light from one output port of the input optical switch 32 and the other output light of the output optical demultiplexing unit 12 as local light. The interference light with the local light is polarized and separated into two light beams. The first light receiver 16a and the second light receiver 16b photoelectrically convert the interference light from the optical multiplexing / demultiplexing unit 15a.

  A case where the optical component is a passive optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. The optical output terminal 13 outputs one output light of the output optical demultiplexing unit 12 to the outside of the optical component evaluation apparatus 105. The output light output from the optical output terminal 13 is input to the passive optical component. Then, output light from the passive optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 105 as measured light. The input optical switch control unit 27 switches the output port of the input optical switch 32 and sets it to the third light receiver 16c side of the two output ports. The input optical switch 32 receives the light to be measured from the optical input terminal 14 and selectively outputs it to the third light receiver 16c side of the two output ports. The third light receiver 16 c photoelectrically converts the light to be measured from the other output port of the input optical switch 32.

  The receiving unit 21 amplifies output signals from the first light receiver 16a, the second light receiver 16b, and the third light receiver 16c. The functions and operations of the AD conversion unit 22, the sampling trigger generation unit 24, the processing unit 23, and the wavelength control unit 25 are the same as those in the first embodiment.

  With the above configuration, the optical component evaluation apparatus 105 can evaluate both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range. Here, in the optical component evaluation apparatus 105, since there is one optical input terminal, handling becomes easy.

(Embodiment 6)
FIG. 6 is a schematic configuration diagram of the optical component evaluation apparatus according to the present embodiment. The optical component evaluation apparatus 106 according to the embodiment of the present invention includes a wavelength tunable light source 11, an output optical switch 34, an optical output terminal 13, an optical input terminal 14, an optical multiplexing / demultiplexing unit 15a, and a first light receiver 16a. And a second light receiver 16b, a receiving unit 21, an AD converting unit 22, a sampling trigger generating unit 24, a processing unit 23, a wavelength control unit 25, and an output optical switch control unit 28.

  A case where the optical component is an active optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output optical switch control unit 28 switches the output port of the output optical switch 34 and sets the output port to the optical multiplexing / demultiplexing unit 15a side of the two output ports. The output optical switch 34 receives the output light from the wavelength variable light source 11 and selectively outputs it to the optical multiplexing / demultiplexing unit 15a side of the two output ports. Light to be measured from the active optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 106. The optical multiplexing / demultiplexing unit 15a receives the measured light from the optical input terminal 14 and receives the output light as the local light from the other output port of the output optical switch 34, thereby interfering between the measured light and the local light. The light is polarized and separated into two light beams. The first light receiver 16a and the second light receiver 16b photoelectrically convert the interference light from the optical multiplexing / demultiplexing unit 15a.

  A case where the optical component is a passive optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output optical switch control unit 28 switches the output port of the output optical switch 34 and sets it to the optical output terminal 13 side of the two output ports. The output optical switch 34 receives the output light from the wavelength tunable light source 11 and selectively outputs it to the optical output terminal 13 side of the two output ports. The optical output terminal 13 outputs the output light from one output port of the output optical switch 34 to the outside of the optical component evaluation apparatus 106. The output light output from the optical output terminal 13 is input to the passive optical component. Then, output light from the passive optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 106 as light to be measured. The optical multiplexing / demultiplexing unit 15a causes the measured light from the optical input terminal 14 to enter at least one of the first light receiver 16a and the second light receiver 16b. At least one of the first light receiver 16a and the second light receiver 16b photoelectrically converts the light to be measured from the optical multiplexing / demultiplexing unit 15a.

  The receiver 21 amplifies output signals from the first light receiver 16a and the second light receiver 16b. The functions and operations of the AD conversion unit 22, the sampling trigger generation unit 24, the processing unit 23, and the wavelength control unit 25 are the same as those in the first embodiment.

  With the above configuration, the optical component evaluation apparatus 106 can evaluate both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range. Here, since the optical component evaluation apparatus 106 can use the output light from the wavelength tunable light source 11 as it is, the output light intensity of the wavelength tunable light source 11 can be made lower than that in the first embodiment. Further, since the optical component evaluation apparatus 106 has a smaller number of light receivers than the first embodiment, the configuration can be simplified. Furthermore, since the optical component evaluation apparatus 106 has one optical input terminal, it is easy to handle.

(Embodiment 7)
FIG. 7 is a schematic configuration diagram of the optical component evaluation apparatus according to the present embodiment. The optical component evaluation apparatus 107 according to the embodiment of the present invention includes a wavelength tunable light source 11, an output light demultiplexing unit 12, a light output terminal 13, a first light input terminal 14a, and a second light input terminal 14b. A polarization scrambler 35, an optical multiplexer 15b, a first light receiver 16a and a second light receiver 16b, a receiver 21, an AD converter 22, a sampling trigger generator 24, a processor 23, A wavelength control unit 25.

  A case where the optical component is an active optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. Light to be measured from the active optical component is input to the first optical input terminal 14 a from the outside of the optical component evaluation apparatus 107. The optical multiplexing unit 15b receives the measured light from the first optical input terminal 14a, and receives the other output light of the output light demultiplexing unit 12 as local light. Make it interfere. The polarization scrambler 35 is disposed in the optical path between the output light demultiplexing unit 12 and the optical multiplexing unit 15b, and eliminates the polarization dependency of the local light. The first light receiver 16a photoelectrically converts the interference light from the optical multiplexing unit 15b.

  Here, the polarization scrambler 35 is disposed in the optical path between the output light demultiplexing unit 12 and the optical output terminal 13 or in the optical path between the wavelength tunable light source 11 and the output light demultiplexing unit 12, and the polarization of the local light. The wave dependency may be eliminated. Moreover, it is arrange | positioned in the optical path between the 1st optical input terminal 14a and the optical multiplexing part 15b, and may eliminate the polarization dependence of to-be-measured light.

  A case where the optical component is a passive optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. The optical output terminal 13 outputs one output light of the output optical demultiplexing unit 12 to the outside of the optical component evaluation apparatus 107. The output light output from the optical output terminal 13 is input to the passive optical component. And the output light from a passive optical component is input into the 2nd optical input terminal 14b from the exterior of the optical component evaluation apparatus 107 as to-be-measured light. The second light receiver 16b photoelectrically converts the light to be measured from the second optical input terminal 14b.

  The receiver 21 amplifies output signals from the first light receiver 16a and the second light receiver 16b. The functions and operations of the AD conversion unit 22, the sampling trigger generation unit 24, the processing unit 23, and the wavelength control unit 25 are the same as those in the first embodiment.

  With the above configuration, the optical component evaluation apparatus 107 can evaluate both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range. Here, in the optical component evaluation apparatus 107, since the number of light receivers is smaller than that in the first embodiment, the configuration can be simplified.

(Embodiment 8)
FIG. 8 is a schematic configuration diagram of the optical component evaluation apparatus according to the present embodiment. The optical component evaluation apparatus 108 according to the embodiment of the present invention includes a wavelength tunable light source 11, a light output terminal 13, a first light input terminal 14a and a second light input terminal 14b, a polarization scrambler 35, The optical multiplexing part 15b, the light receiver 16, the receiving part 21, AD conversion part 22, the sampling trigger generation part 24, the process part 23, and the wavelength control part 25 are provided.

  A case where the optical component is an active optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The optical output terminal 13 outputs the output light from the wavelength variable light source 11 to the outside of the optical component evaluation apparatus 102. The output light output from the optical output terminal 13 is input to the second optical input terminal 14b from the outside of the optical component evaluation apparatus 102. The light to be measured from the active optical component is input to the first optical input terminal 14a from the outside of the optical component evaluation apparatus 108. The optical multiplexing unit 15b receives the measured light from the first optical input terminal 14a and the output light as the local light from the second optical input terminal 14b, and causes the measured light and the local light to interfere with each other. . The polarization scrambler 35 is disposed in the optical path between the second optical input terminal 14b and the optical multiplexing unit 15b, and eliminates the polarization dependence of the local light. The light receiver 16 photoelectrically converts the interference light from the optical multiplexing unit 15b.

  Here, the polarization scrambler 35 may be disposed in the optical path between the wavelength tunable light source 11 and the optical output terminal 13 to eliminate the polarization dependence of the local light. Moreover, it is arrange | positioned in the optical path between the 1st optical input terminal 14a and the optical multiplexing part 15b, and may eliminate the polarization dependence of to-be-measured light.

  A case where the optical component is a passive optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The optical output terminal 13 outputs the output light from the wavelength tunable light source 11 to the outside of the optical component evaluation apparatus 108. The output light output from the optical output terminal 13 is input to the passive optical component. Then, the output light from the passive optical component is input to the first optical input terminal 14a as the light to be measured from the outside of the optical component evaluation apparatus 108. The optical multiplexing unit 15 b causes the light to be measured from the optical input terminal 14 to enter the light receiver 16. The light receiver 16 photoelectrically converts the light to be measured from the optical multiplexing unit 15b.

  The receiver 21 amplifies the output signal of the light receiver 16. The functions and operations of the AD conversion unit 22, the sampling trigger generation unit 24, the processing unit 23, and the wavelength control unit 25 are the same as those in the first embodiment.

  With the above configuration, the optical component evaluation apparatus 108 can evaluate both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range. Here, since the optical component evaluation apparatus 108 can use the output light from the wavelength tunable light source 11 as it is, the output light intensity of the wavelength tunable light source 11 can be made lower than that in the first embodiment. Moreover, in the optical component evaluation apparatus 108, since there are few light receivers compared with Embodiment 1-7, a structure can be simplified.

(Embodiment 9)
FIG. 9 is a schematic configuration diagram of the optical component evaluation apparatus according to the present embodiment. An optical component evaluation apparatus 109 according to an embodiment of the present invention includes a wavelength tunable light source 11, an output optical demultiplexing unit 12, an optical output terminal 13, an optical input terminal 14, an optical multiplexing unit 15b, and a polarization scrambler. 35, light receiver 16, receiver 21, AD converter 22, sampling trigger generator 24, processor 23, wavelength controller 25, optical shutter 33, and optical shutter controller 26. Prepare.

  A case where the optical component is an active optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. The optical shutter control unit 26 controls the optical shutter 33 to open the optical shutter 33. The optical shutter 33 receives the other output light of the output light demultiplexing unit 12 and transmits the output light. Light to be measured from the active optical component is input to the first optical input terminal 14 a from the outside of the optical component evaluation apparatus 109. The optical multiplexing unit 15b receives the measured light from the first optical input terminal 14a and receives the output light as local light from the optical shutter 33, thereby causing the measured light and the local light to interfere with each other. The polarization scrambler 35 is disposed in the optical path between the output light demultiplexing unit 12 and the optical multiplexing unit 15b, and eliminates the polarization dependency of the local light. The light receiver 16 photoelectrically converts the interference light from the optical multiplexing unit 15b.

  Here, the polarization scrambler 35 is disposed in the optical path between the output light demultiplexing unit 12 and the optical output terminal 13 or in the optical path between the wavelength tunable light source 11 and the output light demultiplexing unit 12, and the polarization of the local light. The wave dependency may be eliminated. Moreover, it is arrange | positioned in the optical path between the optical input terminal 14 and the optical multiplexing part 15b, and may eliminate the polarization dependence of to-be-measured light.

  A case where the optical component is a passive optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. The optical shutter control unit 26 controls the optical shutter 33 to close the optical shutter 33. The optical shutter 33 receives the other output light of the output light demultiplexing unit 12 and blocks the output light. The optical output terminal 13 outputs one output light of the output optical demultiplexing unit 12 to the outside of the optical component evaluation apparatus 109. The output light output from the optical output terminal 13 is input to the passive optical component. Output light from the passive optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 109 as light to be measured. The optical multiplexing unit 15 b allows the light to be measured from the optical input terminal 14 to pass through. The light receiver 16 photoelectrically converts the light to be measured from the optical multiplexing unit 15b.

  The receiver 21 amplifies the output signal of the light receiver 16. The functions and operations of the AD conversion unit 22, the sampling trigger generation unit 24, the processing unit 23, and the wavelength control unit 25 are the same as those in the first embodiment.

  With the above configuration, the optical component evaluation apparatus 109 can evaluate both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range. Here, in the optical component evaluation apparatus 109, since the number of light receivers is smaller than in the first to seventh embodiments, the configuration can be simplified. Moreover, since there is one optical input terminal, handling becomes easy.

(Embodiment 10)
FIG. 10 is a schematic configuration diagram of the optical component evaluation apparatus according to the present embodiment. The optical component evaluation apparatus 110 according to the embodiment of the present invention includes a wavelength tunable light source 11, an output optical demultiplexing unit 12, an optical output terminal 13, an optical input terminal 14, an input optical demultiplexing unit 31, and an optical multiplexing. Unit 15b, polarization scrambler 35, first light receiver 16a and second light receiver 16b, receiver 21, AD converter 22, sampling trigger generator 24, processor 23, wavelength controller 25.

  A case where the optical component is an active optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. Light to be measured from the active optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 110. The input light demultiplexing unit 31 demultiplexes the measured light from the light input terminal 14 into two light beams. The optical multiplexing unit 15b receives the measured light that is one of the output lights of the input light demultiplexing unit 31, and the other output light of the output light demultiplexing unit 12 as the local light. And local light. The polarization scrambler 35 is disposed in the optical path between the output light demultiplexing unit 12 and the optical multiplexing unit 15b, and eliminates the polarization dependency of the local light. The first light receiver 16a photoelectrically converts the interference light from the optical multiplexing unit 15b.

  Here, the polarization scrambler 35 is disposed in the optical path between the output light demultiplexing unit 12 and the optical output terminal 13 or in the optical path between the wavelength tunable light source 11 and the output light demultiplexing unit 12, and the polarization of the local light. The wave dependency may be eliminated. Further, the polarization scrambler 35 may be disposed in the optical path between the optical input terminal 14 and the optical multiplexing unit 15b to eliminate the polarization dependence of the light to be measured.

  A case where the optical component is a passive optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. The optical output terminal 13 outputs one output light of the output optical demultiplexing unit 12 to the outside of the optical component evaluation apparatus 110. The output light output from the optical output terminal 13 is input to the passive optical component. Then, output light from the passive optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 110 as light to be measured. The input light demultiplexing unit 31 demultiplexes the measured light from the light input terminal 14 into two light beams. The second light receiver 16 b photoelectrically converts the measured light that is the other output light of the input light demultiplexing unit 31.

  The receiver 21 amplifies output signals from the first light receiver 16a and the second light receiver 16b. The functions and operations of the AD conversion unit 22, the sampling trigger generation unit 24, the processing unit 23, and the wavelength control unit 25 are the same as those in the first embodiment.

  With the above configuration, the optical component evaluation apparatus 110 can evaluate both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range. Here, in the optical component evaluation apparatus 110, since the number of light receivers is smaller than that in the first embodiment, the configuration can be simplified. Moreover, since there is one optical input terminal, handling becomes easy.

(Embodiment 11)
FIG. 11 is a schematic configuration diagram of the optical component evaluation apparatus according to the present embodiment. The optical component evaluation apparatus 111 according to the embodiment of the present invention includes a wavelength tunable light source 11, an output optical demultiplexing unit 12, an optical output terminal 13, an optical input terminal 14, an input optical switch 32, and an optical multiplexing unit 15b. A polarization scrambler 35, a first light receiver 16a and a second light receiver 16b, a receiver 21, an AD converter 22, a sampling trigger generator 24, a processor 23, and a wavelength controller 25. And an input optical switch control unit 27.

  A case where the optical component is an active optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. Light to be measured from an active optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 111. The input optical switch control unit 27 switches the output port of the input optical switch 32 and sets it to the optical multiplexing unit 15b side of the two output ports. The input optical switch 32 receives the measured light from the optical input terminal 14 and selectively outputs it to the optical multiplexing unit 15b side of the two output ports. The optical multiplexing unit 15b receives the measured light from one output port of the input optical switch 32 and the other output light of the output optical demultiplexing unit 12 as local light. Interfere with light. The polarization scrambler 35 is disposed in the optical path between the output light demultiplexing unit 12 and the optical multiplexing unit 15b, and eliminates the polarization dependency of the local light. The first light receiver 16a photoelectrically converts the interference light from the optical multiplexing unit 15b.

  Here, the polarization scrambler 35 is disposed in the optical path between the output light demultiplexing unit 12 and the optical output terminal 13 or in the optical path between the wavelength tunable light source 11 and the output light demultiplexing unit 12, and the polarization of the local light. The wave dependency may be eliminated. The polarization scrambler 35 is disposed in the optical path between the input optical switch 32 and the optical multiplexing unit 15b or in the optical path between the optical input terminal 14 and the input optical switch 32, and reduces the polarization dependence of the measured light. It may be resolved.

  A case where the optical component is a passive optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output light demultiplexing unit 12 demultiplexes the output light from the wavelength variable light source 11 into two light beams. The optical output terminal 13 outputs one output light of the output optical demultiplexing unit 12 to the outside of the optical component evaluation apparatus 111. The output light output from the optical output terminal 13 is input to the passive optical component. Then, output light from the passive optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 111 as light to be measured. The input optical switch control unit 27 switches the output port of the input optical switch 32 and sets it to the second light receiver 16b side of the two output ports. The input optical switch 32 receives the light to be measured from the optical input terminal 14 and selectively outputs it to the first light receiver 16b side of the two output ports. The second light receiver 16 b photoelectrically converts the light to be measured from the other output port of the input optical switch 32.

  The receiver 21 amplifies output signals from the first light receiver 16a and the second light receiver 16b. The functions and operations of the AD conversion unit 22, the sampling trigger generation unit 24, the processing unit 23, and the wavelength control unit 25 are the same as those in the first embodiment.

  With the above configuration, the optical component evaluation apparatus 111 can evaluate both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range. Here, in the optical component evaluation apparatus 111, since the number of light receivers is smaller than that in the first embodiment, the configuration can be simplified. Moreover, since there is one optical input terminal, handling becomes easy.

Embodiment 12
FIG. 12 is a schematic configuration diagram of the optical component evaluation apparatus according to the present embodiment. The optical component evaluation apparatus 112 according to the embodiment of the present invention includes a wavelength tunable light source 11, an output optical switch 34, an optical output terminal 13, an optical input terminal 14, an optical multiplexing unit 15b, and a polarization scrambler 35. , A light receiver 16, a receiver 21, an AD converter 22, a sampling trigger generator 24, a processor 23, a wavelength controller 25, and an output optical switch controller 28.

  A case where the optical component is an active optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output optical switch control unit 28 switches the output port of the output optical switch 34 and sets the output port to the optical multiplexing unit 15b side of the two output ports. The output optical switch 34 receives the output light from the wavelength tunable light source 11 and selectively outputs it to the optical multiplexing unit 15b side of the two output ports. Light to be measured from the active optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 112. The optical multiplexer 15b receives the measured light from the optical input terminal 14 and receives the output light as local light from the other output port of the output optical switch 34, thereby causing the measured light and the local light to interfere with each other. . The polarization scrambler 35 is disposed on the optical path between the output optical switch 34 and the optical multiplexing unit 15b, and eliminates the polarization dependence of the local light. The light receiver 16 photoelectrically converts the interference light from the optical multiplexing unit 15b.

  Here, the polarization scrambler 35 is disposed in the optical path between the output optical switch 34 and the optical output terminal 13 or in the optical path between the wavelength tunable light source 11 and the output optical switch 34, and reduces the polarization dependence of the local light. It may be resolved. Moreover, it is arrange | positioned in the optical path between the optical input terminal 14 and the optical multiplexing part 15b, and may eliminate the polarization dependence of to-be-measured light.

  A case where the optical component is a passive optical component will be described. The wavelength variable light source 11 outputs light having an arbitrary wavelength. The output optical switch control unit 28 switches the output port of the output optical switch 34 and sets it to the optical output terminal 13 side of the two output ports. The output optical switch 34 receives the output light from the wavelength tunable light source 11 and selectively outputs it to the optical output terminal 13 side of the two output ports. The optical output terminal 13 outputs the output light from one output port of the output optical switch 34 to the outside of the optical component evaluation apparatus 112. The output light output from the optical output terminal 13 is input to the passive optical component. Then, output light from the passive optical component is input to the optical input terminal 14 from the outside of the optical component evaluation apparatus 112 as measured light. The optical multiplexing unit 15 b causes the light to be measured from the optical input terminal 14 to enter the light receiver 16. The light receiver 16 photoelectrically converts the light to be measured from the optical multiplexing unit 15b.

  The receiver 21 amplifies the output signal of the light receiver 16. The functions and operations of the AD conversion unit 22, the sampling trigger generation unit 24, the processing unit 23, and the wavelength control unit 25 are the same as those in the first embodiment.

  With the above configuration, the optical component evaluation apparatus 112 can evaluate both the active optical component and the passive optical component with high wavelength resolution and a wide dynamic range. Here, since the optical component evaluation apparatus 112 can use the output light from the wavelength tunable light source 11 as it is, the output light intensity of the wavelength tunable light source 11 can be made lower than that in the first embodiment. Moreover, in the optical component evaluation apparatus 112, since there are few light receivers compared with Embodiment 1-Embodiment 7, a structure can be simplified. Moreover, since there is one optical input terminal, handling becomes easy.

  The optical component evaluation apparatus of the present invention can be used in the information communication industry because it can evaluate optical components used in optical communication.

11: Wavelength variable light source 12: Output light demultiplexing unit 13: Optical output terminal 14: Optical input terminal 14a: First optical input terminal 14b: Second optical input terminal 15a: Optical multiplexing / demultiplexing unit 15b: Optical multiplexing unit 16 : Light receiver 16a: first light receiver 16b: second light receiver 16c: third light receiver 21: receiver 22: AD converter 23: processor 24: sampling trigger generator 25: wavelength controller 26: optical shutter control Unit 27: Input optical switch control unit 28: Output optical switch control unit 31: Input optical demultiplexing unit 32: Input optical switch 33: Optical shutter 34: Output optical switch 35: Polarization scramblers 101 to 112: Optical component evaluation device

Claims (12)

An optical component evaluation apparatus (101) for obtaining a spectrum of light to be measured from an optical component,
A tunable light source (11) that outputs light of an arbitrary wavelength;
An output light demultiplexing unit (12) for demultiplexing the output light from the wavelength variable light source into two luminous fluxes;
An optical output terminal (13) for outputting one output light of the output optical demultiplexing unit to the outside of the optical component evaluation device;
A first optical input terminal (14a) and a second optical input terminal (14b) to which light to be measured is input from the outside of the optical component evaluation apparatus;
The measurement light is input from the first light input terminal and the other output light of the output light demultiplexing unit is input as local light, and two light beams of interference light between the measurement light and the local light are input. An optical multiplexing / demultiplexing unit (15a) that splits the light into
A first light receiver (16a) and a second light receiver (16b) for photoelectrically converting interference light from the optical multiplexing / demultiplexing unit;
A third light receiver (16c) that photoelectrically converts light from the second light input terminal;
A receiver (21) for amplifying output signals of the first light receiver, the second light receiver and the third light receiver;
An AD converter (22) for converting the signal amplified by the receiver into a digital signal;
A sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter;
A processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device;
A wavelength controller (25) for changing the wavelength of output light from the wavelength variable light source;
An optical component evaluation apparatus comprising: An optical component evaluation apparatus (102) for obtaining a spectrum of light to be measured from an optical component,
A tunable light source (11) that outputs light of an arbitrary wavelength;
An optical output terminal (13) for outputting output light from the wavelength tunable light source to the outside of the optical component evaluation apparatus;
A first optical input terminal (14a) to which light to be measured is input from the outside of the optical component evaluation apparatus;
A second optical input terminal (14b) to which output light output from the optical output terminal is input;
The light to be measured is input from the first light input terminal and the output light is input as local light from the second light input terminal, and interference light between the light to be measured and the local light is converted into two light beams. An optical multiplexing / demultiplexing unit (15a) for polarization separation;
A first light receiver (16a) and a second light receiver (16b) for photoelectrically converting light from the optical multiplexing / demultiplexing unit;
A receiver (21) for amplifying output signals of the first and second light receivers;
An AD converter (22) for converting the signal amplified by the receiver into a digital signal;
A sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter;
A processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device;
A wavelength controller (25) for changing the wavelength of output light from the wavelength variable light source;
An optical component evaluation apparatus comprising: An optical component evaluation apparatus (103) for obtaining a spectrum of light to be measured from an optical component,
A tunable light source (11) that outputs light of an arbitrary wavelength;
An output light demultiplexing unit (12) for demultiplexing the output light from the wavelength variable light source into two luminous fluxes;
An optical output terminal (13) for outputting one output light of the output optical demultiplexing unit to the outside of the optical component evaluation device;
An optical shutter (33) that receives the other output light of the output light demultiplexing unit and transmits or blocks the light;
An optical input terminal (14) to which light to be measured is input from the outside of the optical component evaluation apparatus;
An optical multiplexing / demultiplexing unit that receives the measured light from the optical input terminal and outputs the output light from the optical shutter as local light, and polarizes and separates the interference light between the measured light and the local light into two light beams ( 15a)
A first light receiver (16a) and a second light receiver (16b) for photoelectrically converting light from the optical multiplexing / demultiplexing unit;
A receiver (21) for amplifying output signals of the first and second light receivers;
An AD converter (22) for converting the signal amplified by the receiver into a digital signal;
A sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter;
A processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device;
A wavelength controller (25) for changing the wavelength of output light from the wavelength variable light source;
An optical shutter controller (26) for opening and closing the optical shutter;
An optical component evaluation apparatus comprising: An optical component evaluation apparatus (104) for obtaining a spectrum of output light from an optical component,
A tunable light source (11) that outputs light of an arbitrary wavelength;
An output light demultiplexing unit (12) for demultiplexing the output light from the wavelength variable light source into two luminous fluxes;
An optical output terminal (13) for outputting one output light of the output optical demultiplexing unit to the outside of the optical component evaluation device;
An optical input terminal (14) to which light to be measured is input from the outside of the optical component evaluation apparatus;
An input light demultiplexing unit (31) for demultiplexing the light to be measured from the light input terminal into two light fluxes;
One output light of the input light demultiplexing unit is input and the other output light of the output light demultiplexing unit is input as local light, and two light beams of interference light between the light to be measured and the local light are input. An optical multiplexing / demultiplexing unit (15a) that splits the light into
A first light receiver (16a) and a second light receiver (16b) for photoelectrically converting light from the optical multiplexing / demultiplexing unit;
A third light receiver (16c) that photoelectrically converts the other output light of the input light demultiplexing unit;
A receiver (21) for amplifying output signals of the first light receiver, the second light receiver and the third light receiver;
An AD converter (22) for converting the signal amplified by the receiver into a digital signal;
A sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter;
A processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device;
A wavelength controller (25) for changing the wavelength of output light from the wavelength variable light source;
An optical component evaluation apparatus comprising: An optical component evaluation apparatus (105) for obtaining a spectrum of output light from an optical component,
A tunable light source (11) that outputs light of an arbitrary wavelength;
An output light demultiplexing unit (12) for demultiplexing the output light from the wavelength variable light source into two luminous fluxes;
An optical output terminal (13) for outputting one output light of the output optical demultiplexing unit to the outside of the optical component evaluation device;
An optical input terminal (14) to which light to be measured is input from the outside of the optical component evaluation apparatus;
An input optical switch (32) that receives the light to be measured from the optical input terminal and selectively outputs to one of the two output ports;
Light to be measured from one output port of the input optical switch is input and the other output light of the output light demultiplexing unit is input as local light, and interference light between the light to be measured and the local light An optical multiplexing / demultiplexing unit (15a) that splits the light into two beams.
A first light receiver (16a) and a second light receiver (16b) for photoelectrically converting light from the optical multiplexing / demultiplexing unit;
A third light receiver (16c) that photoelectrically converts light under measurement from the other output port of the input optical switch;
A receiver (21) for amplifying output signals of the first light receiver, the second light receiver and the third light receiver;
An AD converter (22) for converting the signal amplified by the receiver into a digital signal;
A sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter;
A processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device;
A wavelength controller (25) for changing the wavelength of output light from the wavelength variable light source;
An input optical switch controller (27) for switching an output port of the input optical switch;
An optical component evaluation apparatus comprising: An optical component evaluation apparatus (106) for obtaining a spectrum of output light from an optical component,
A tunable light source (11) that outputs light of an arbitrary wavelength;
An output optical switch (34) that receives output light from the wavelength tunable light source and selectively outputs to one of two output ports;
An optical output terminal (13) for outputting output light from one output port of the output optical switch to the outside of the optical component evaluation apparatus;
An optical input terminal (14) to which light to be measured is input from the outside of the optical component evaluation apparatus;
Light to be measured is input from the light input terminal and output light is input as local light from the other output port of the output optical switch, and interference light between the light to be measured and the local light is polarized into two light beams. An optical multiplexing / demultiplexing part (15a) to be separated;
A first light receiver (16a) and a second light receiver (16b) for photoelectrically converting light from the optical multiplexing / demultiplexing unit;
A receiver (21) for amplifying output signals of the first and second light receivers;
An AD converter (22) for converting the signal amplified by the receiver into a digital signal;
A sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter;
A processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device;
A wavelength controller (25) for changing the wavelength of output light from the wavelength variable light source;
An output optical switch controller (28) for switching an output port of the output optical switch;
An optical component evaluation apparatus comprising: An optical component evaluation apparatus (107) for obtaining a spectrum of output light from an optical component,
A tunable light source (11) that outputs light of an arbitrary wavelength;
An output light demultiplexing unit (12) for demultiplexing the output light from the wavelength variable light source into two luminous fluxes;
An optical output terminal (13) for outputting one output light of the output optical demultiplexing unit to the outside of the optical component evaluation device;
A first optical input terminal (14a) and a second optical input terminal (14b) to which light to be measured is input from the outside of the optical component evaluation apparatus;
An optical multiplexing unit that receives the measured light from the first optical input terminal and the other output light of the output light demultiplexing unit as local light, and causes the measured light and the local light to interfere with each other (15b)
An optical path between the output optical demultiplexing unit (12) and the optical multiplexing unit (15b), an optical path between the output optical demultiplexing unit (12) and the optical output terminal (13), and the first Arranged in any one of an optical path between the optical input terminal (14a) and the optical multiplexing unit (15b) and an optical path between the wavelength variable light source (11) and the output optical demultiplexing unit (12), A polarization scrambler (35) for eliminating polarization dependency of light or the light to be measured;
A first light receiver (16a) for photoelectrically converting light from the optical multiplexing unit;
A second light receiver (16b) that photoelectrically converts light from the second light input terminal;
A receiver (21) for amplifying output signals of the first and second light receivers;
An AD converter (22) for converting the signal amplified by the receiver into a digital signal;
A sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter;
A processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device;
A wavelength controller (25) for changing the wavelength of output light from the wavelength variable light source;
An optical component evaluation apparatus comprising: An optical component evaluation apparatus (108) for obtaining a spectrum of light to be measured from an optical component,
A tunable light source (11) that outputs light of an arbitrary wavelength;
An optical output terminal (13) for outputting output light from the wavelength tunable light source to the outside of the optical component evaluation apparatus;
A first optical input terminal (14a) to which light to be measured is input from the outside of the optical component evaluation apparatus;
A second optical input terminal (14b) to which output light output from the optical output terminal is input;
An optical multiplexing unit that receives the measured light from the first optical input terminal and the output light as the local light from the second optical input terminal, and causes the measured light and the local light to interfere with each other. 15b)
An optical path between the second optical input terminal (14b) and the optical multiplexing unit (15b), an optical path between the wavelength variable light source (11) and the optical output terminal (13), and the first light A polarization scrambler (35) disposed in any one of the optical paths between the input terminal (14a) and the optical multiplexing unit (15b) to eliminate the polarization dependence of the local light or the measured light;
A light receiver (16) for photoelectrically converting light from the optical multiplexing unit;
A receiver (21) for amplifying the output signal of the light receiver;
An AD converter (22) for converting the signal amplified by the receiver into a digital signal;
A sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter;
A processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device;
A wavelength controller (25) for changing the wavelength of output light from the wavelength variable light source;
An optical component evaluation apparatus comprising: An optical component evaluation apparatus (109) for obtaining a spectrum of light to be measured from an optical component,
A tunable light source (11) that outputs light of an arbitrary wavelength;
An output light demultiplexing unit (12) for demultiplexing the output light from the wavelength variable light source into two luminous fluxes;
An optical output terminal (13) for outputting one output light of the output optical demultiplexing unit to the outside of the optical component evaluation device;
An optical shutter (33) that receives the other output light of the output light demultiplexing unit and transmits or blocks the light;
An optical input terminal (14) to which light to be measured is input from the outside of the optical component evaluation apparatus;
An optical multiplexing unit (15b) for inputting measured light from the optical input terminal and output light from the optical shutter as local light, and interfering the measured light and the local light;
The optical path between the output optical demultiplexing unit (12) and the optical multiplexing unit (15b), the optical path between the output optical demultiplexing unit (12) and the optical output terminal (13), and the optical input terminal (14) and an optical path between the optical multiplexing unit (15b) and an optical path between the wavelength variable light source (11) and the output optical demultiplexing unit (12), and the local light or the optical path A polarization scrambler (35) for eliminating the polarization dependence of the light under measurement;
A light receiver (16) for photoelectrically converting light from the optical multiplexing unit;
A receiver (21) for amplifying the output signal of the light receiver;
An AD converter (22) for converting the signal amplified by the receiver into a digital signal;
A sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter;
A processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device;
A wavelength controller (25) for changing the wavelength of output light from the wavelength variable light source;
An optical shutter controller (26) for opening and closing the optical shutter;
An optical component evaluation apparatus comprising: An optical component evaluation apparatus (110) for obtaining a spectrum of output light from an optical component,
A tunable light source (11) that outputs light of an arbitrary wavelength;
An output light demultiplexing unit (12) for demultiplexing the output light from the wavelength variable light source into two luminous fluxes;
An optical output terminal (13) for outputting one output light of the output optical demultiplexing unit to the outside of the optical component evaluation device;
An optical input terminal (14) to which light to be measured is input from the outside of the optical component evaluation apparatus;
An input light demultiplexing unit (31) for demultiplexing the light to be measured from the light input terminal into two light fluxes;
An optical multiplexing unit that receives one output light of the input light demultiplexing unit and the other output light of the output light demultiplexing unit as local light, and causes the measured light and the local light to interfere with each other (15b)
The optical path between the output optical demultiplexing unit (12) and the optical multiplexing unit (15b), the optical path between the output optical demultiplexing unit (12) and the optical output terminal (13), and the optical input terminal (14) and an optical path between the input optical demultiplexing unit (31), an optical path between the input optical demultiplexing unit (31) and the optical multiplexing unit (15b), and the variable wavelength light source (11). A polarization scrambler (35) disposed in any one of the optical paths between the output light demultiplexing units (12) and canceling the polarization dependence of the local light or the measured light;
A first light receiver (16a) for photoelectrically converting light from the optical multiplexing unit;
A second light receiver (16b) for photoelectrically converting the other output light of the input light demultiplexing unit;
A receiver (21) for amplifying output signals of the first and second light receivers;
An AD converter (22) for converting the signal amplified by the receiver into a digital signal;
A sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter;
A processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device;
A wavelength controller (25) for changing the wavelength of output light from the wavelength variable light source;
An optical component evaluation apparatus comprising: An optical component evaluation apparatus (111) for obtaining a spectrum of output light from an optical component,
A tunable light source (11) that outputs light of an arbitrary wavelength;
An output light demultiplexing unit (12) for demultiplexing the output light from the wavelength variable light source into two luminous fluxes;
An optical output terminal (13) for outputting one output light of the output optical demultiplexing unit to the outside of the optical component evaluation device;
An optical input terminal (14) to which light to be measured is input from the outside of the optical component evaluation apparatus;
An input optical switch (32) that receives the light to be measured from the optical input terminal and selectively outputs to one of the two output ports;
Light to be measured from one output port of the input optical switch is input and the other output light of the output light demultiplexing unit is input as local light, causing the light to be measured and the local light to interfere with each other. An optical multiplexing section (15b);
The optical path between the output optical demultiplexing unit (12) and the optical multiplexing unit (15b), the optical path between the output optical demultiplexing unit (12) and the optical output terminal (13), and the optical input terminal (14) and the optical path between the input optical switch (32), the optical path between the input optical switch (32) and the optical multiplexing unit (15b), and the wavelength tunable light source (11) and the output optical component. A polarization scrambler (35) disposed in any one of the optical paths between the wave portions (12) and eliminating the polarization dependence of the local light or the measured light;
A first light receiver (16a) for photoelectrically converting light from the optical multiplexing unit;
A second light receiver (16b) that photoelectrically converts light under measurement from the other output port of the input optical switch;
A receiver (21) for amplifying output signals of the first and second light receivers;
An AD converter (22) for converting the signal amplified by the receiver into a digital signal;
A sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter;
A processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device;
A wavelength controller (25) for changing the wavelength of output light from the wavelength variable light source;
An input optical switch controller (27) for switching an output port of the input optical switch;
An optical component evaluation apparatus comprising: An optical component evaluation apparatus (112) for obtaining a spectrum of output light from an optical component,
A tunable light source (11) that outputs light of an arbitrary wavelength;
An output optical switch (34) that receives output light from the wavelength tunable light source and selectively outputs to one of two output ports;
An optical output terminal (13) for outputting output light from one output port of the output optical switch to the outside of the optical component evaluation apparatus;
An optical input terminal (14) to which light to be measured is input from the outside of the optical component evaluation apparatus;
An optical multiplexing unit (15b) that receives light to be measured from the optical input terminal and outputs light as local light from the other output port of the output optical switch to cause interference between the light to be measured and the local light. )When,
An optical path between the output optical switch (34) and the optical multiplexer (15b), an optical path between the output optical switch (34) and the optical output terminal (13), and the optical input terminal (14). Arranged in one of the optical path between the optical multiplexing unit (15b) and the optical path between the wavelength tunable light source (11) and the output optical switch (34), and the polarization of the local light or the measured light A polarization scrambler (35) that eliminates the dependence;
A light receiver (16) for photoelectrically converting light from the optical multiplexing unit;
A receiver (21) for amplifying the output signal of the light receiver;
An AD converter (22) for converting the signal amplified by the receiver into a digital signal;
A sampling trigger generator (24) for generating a sampling trigger for AD conversion of the AD converter;
A processing unit (23) for obtaining a spectrum from the digital signal of the AD conversion unit and outputting the spectrum to the outside of the optical component evaluation device;
A wavelength controller (25) for changing the wavelength of output light from the wavelength variable light source;
An output optical switch controller (28) for switching an output port of the output optical switch;
An optical component evaluation apparatus comprising:

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