KR102040537B1 - PLC type optical module for wavelength power meter - Google Patents

Abstract

The present invention relates to a PLC-type optical module for an optical wavelength power measurement device comprising: an input unit to receive a multi-wavelength input optical signal from a light source; an optical wavelength distribution unit connected to the input unit to split the input optical signal inputted via the input unit into a plurality of branch optical signals and aligned optical signals each having a single wavelength to output the branch optical signals and the aligned optical signals, and provided with a plurality of output waveguides to independently output the branch optical signals and aligned waveguides to output the aligned optical signals; and a detection unit which is coupled to the optical wavelength distribution unit to detect the branch optical signals inputted to the output waveguides, and outputs the aligned optical signals inputted from the aligned waveguides to the outside for assembly state inspection. According to the present invention, the PLC-type optical module for an optical wavelength power measurement device adds one or more vertical ports of equal-interval wavelengths of a signal terminal to an outer terminal of AWG dividing an optical wavelength or connects optical distribution to an uppermost channel and a lowermost channel of the output terminal in the same optical distribution unit structure to split and output a portion of branching optical signals by wavelength to align and bond the input terminal. Therefore, a worker can easily identify assembly states of an optical distribution unit and a detector.

Description

PLC type optical module for optical power meter {PLC type optical module for wavelength power meter}

The present invention relates to a PLC type optical module for an optical wavelength power meter, and more particularly, to an optical wavelength power meter for simultaneously measuring optical wavelength and power in an optical communication system or a mobile communication system.

As information and communication capacity increases exponentially, optical communication technology, which is the core of wired communication, is widely spreading from national backbone network to general subscriber network. As the communication capacity becomes larger and higher in quality, the optical communication technology is changing into a high density multi-channel wavelength division multiplexed transmission technology.

At present, wavelength multiplexing is increasing from tens of channels to hundreds of channels, but we will establish FTTH (Fiber To The Home) which will be promoted nationwide later, and from 1.2㎛ to 1.7 when ubiquitous network technology is in full swing. It is anticipated that the optical communication transmission band will be extended to the 占 퐉 wavelength band.

As described above, the field of increasing importance as the optical wavelength band is expanded or the wavelength multiplexing is increased is the establishment of measurement standards and measurement technology related to optical communication.

Equipment for measuring the intensity of the light source, or optical power, is an optical power meter, which measures the optical power level and the loss value. It is used to make simple measurements. The measuring principle of the optical power is mainly measured by using photodiodes such as Ge, InGaAs, GaAs, etc. by converting the light intensity into an electrical signal.

The optical power meter can accurately measure the power of light, but there are various difficulties in simply measuring the optical power when installing and maintaining the optical subscriber network.

In particular, when the multiple wavelengths and the wavelength input to each subscriber are different, such as in the E / G-PON technology, WDM-PON technology, CWDM-PON technology, etc. The power meter cannot measure the exact optical wavelength / power, nor does it know what wavelength is input. Therefore, it is necessary to know exactly the wavelength to be used, and it is necessary to know the power of the wavelength correctly. As such, since the optical power meter cannot measure the optical wavelength which is very important in the optical communication band, a separate equipment for measuring the optical wavelength or an apparatus capable of measuring the optical power and the wavelength should be used.

Optical Spectrum Analyzer is a device that can measure optical power and wavelength simultaneously. Optical wavelength analyzers are used to analyze the optical power and wavelength of multiplexed optical signals in a wavelength division multiplexing (WDM) system. The measuring principle of the optical wavelength analyzer confirms the optical wavelength by analyzing the spectrum passing through the grating period. The equipment for measuring the optical wavelength requires much more sophisticated optical technology and complicated process than the equipment for measuring the optical power, so the structure is complicated, bulky and weighty, power-consuming and shock-resistant, which can be used in the laboratory. It is only about. Therefore, there is a problem in that it is very inconvenient to measure the wavelength of the optical communication repeater installed mainly on the outdoor roof.

In order to improve this problem, Korean Patent Application Publication No. 20-0385979 (Handheld Optical Wavelength Meter for CWDM Wavelength Measurement) has been disclosed. The optical wavelength power meter is used for optical wavelength measurement and optical measurement of an optical communication system. An optical measuring device for measuring power, comprising: a CWDM optical filter for dividing a wavelength component of an input optical signal, a Mux element for switching and transmitting multi-channel input information, and an optical signal that amplifies, A / D converts, and outputs a signal It includes a power measurement mechanism. In addition, CWDM optical filter divides the wavelength component of the input optical signal, and commercialized various products such as Coarse Wavelength Division Multiplexer and Multi-Channel High Density Wavelength Division Filter (Dense-WDM) We will use a branch filter.

In addition, since the waveguide of the output wavelength is applied to each PD as in the one-chip optical wavelength power meter (Patent Registration No.:10-1855409)], the optical fiber array block of the input end of the optical waveguide is bonded with the AWG chip through optical alignment. In the passive device, since the optical element is aligned with the optical fiber array block at the input terminal and the AWG chip and the optical fiber array block at the output terminal, the optical fiber is aligned on the output terminal so that the input terminal can be easily aligned. It is necessary to be bonded through. In addition, in order to adjust the center wavelength in the Athermal AWG structure, as shown in Patent Registration No. 10-1279015, a structure for viewing the light wavelength of the output terminal that needs to match the light wavelength output by using an optical spectrum analyzer (OSA) is required. Since the FA is installed in this output terminal, the wavelength of the light source to be output is checked and the same wavelength interval of the channels used in the ITU-T channel interval or the portable optical wavelength power meter, that is, the wavelength of +/- channel by the interval of 100 GHz, 50 GHz or 20 nm We propose a structure that can serve to establish the

The present invention has been made to improve the above problems, and provides an improvement of a one-chip optical wavelength power meter which can be used for input stage optical alignment by branching a part of the optical signal branched from the optical distribution unit, and characteristics of Athermal Its purpose is to provide a function for setting the start wavelength and the end wavelength by maintaining the output terminal spacing in multiples at equal intervals.

PLC type optical module for optical wavelength power measuring device according to the present invention for achieving the above object is an input unit for inputting a multi-wavelength input optical signal from a light source, and the input optical signal connected through the input unit is connected to each single input unit A plurality of branched optical signals and an aligning optical signal having a wavelength band are outputted in a branched manner, each of which has a plurality of output waveguides for independently outputting the branched optical signals and an aligning waveguide for outputting the aligned optical signal. A detection unit coupled to the optical wavelength distribution unit for detecting the branched optical signals inputted to the output waveguide, and outputting the alignment optical signal inputted from the alignment waveguide to the outside for assembly state inspection With a unit.

The optical wavelength distribution unit is formed such that the auxiliary waveguide is located at the outermost side with respect to the arrangement direction of the output waveguides.

The detection unit is coupled to the optical wavelength distribution unit, and a plurality of connection waveguides are formed to be connected to output terminals of the output waveguides so that the branched optical signal can be input from the output waveguide, and the alignment optical signal from the auxiliary waveguide is A coupling portion provided with a detection waveguide connected to an output end of the alignment waveguide to be input, and a plurality of optical sensors respectively provided on the connection waveguides for detecting the branched optical signals inputted to the output waveguide; And a detector, wherein the coupling part has an end portion of the detection waveguide in the branch in the connection waveguide so that an alignment optical signal input to the detection waveguide can be output to the outside through an output end of the connection waveguide and detected by an external detection device. To the optical sensor based on the movement direction of the optical signal. It is formed so as to be connected to the connecting waveguides of a position spaced rearwardly.

The coupling part is formed such that ends of the detection waveguides are respectively connected to the plurality of connection waveguides located at the outermost side with respect to the arrangement direction of the connection waveguides.

On the other hand, the PLC optical module for optical wavelength power measuring device according to the present invention has an input unit for inputting a multi-wavelength input optical signal from a light source, and a plurality of input optical signals connected through the input unit having a single wavelength band Branched to a branched optical signal of and outputted, wherein the branched optical signal is inputted from the output waveguide, and is coupled to an optical wavelength distribution unit having a plurality of output waveguides for outputting the branched optical signals independently, and the optical wavelength distribution unit. A plurality of connecting waveguides are formed to be connected to the output ends of the output waveguides, and branched waveguides branched from some of the connecting waveguides are provided to branch and output some of the branched optical signals inputted to the connecting waveguides. A coupling unit and the branch optical signals inputted to the output waveguide And a detector comprising a plurality of optical sensors each mounted on said connecting waveguides for detection.

The coupler may include branching waveguides respectively formed in the plurality of connection waveguides located at the outermost side with respect to the arrangement direction of the connection waveguides.

The coupling part may be an end portion of the branch waveguide based on a moving direction of the branch optical signal in the connection waveguide so that an optical signal input to the branch waveguide may be output to the outside through an output terminal of the connection waveguide and detected by an external detection device. Is formed to be connected to the connecting waveguide at a position spaced rearward with respect to the optical sensor.

The coupling part is formed such that ends of the branch waveguides are respectively connected to the plurality of connection waveguides located at the outermost side with respect to the arrangement direction of the connection waveguides.

PLC type optical module for optical wavelength power measuring device according to the present invention adds one or more upper and lower ports of the equal interval of the signal stage to the output terminal of the AWG that divides the optical wavelength, or the top channel and the lowest channel of the output terminal in the same optical distribution structure The optical distribution is connected to the channel, so that a part of the optical signals branched by the wavelengths can be branched and output to align bonding of the input stage, so that the operator can easily understand the assembly state of the optical distribution unit and the detector.

1 is a view of the main body of a PLC-type optical module for an optical wavelength power meter according to the present invention,
2 and 3 are conceptual views of the PLC optical module for the optical wavelength power meter of FIG.
4 is a cross-sectional view of the coupling portion of the PLC optical module for optical wavelength power meter of FIG.
5 is a conceptual diagram of a PLC optical module for an optical wavelength power meter according to another embodiment of the present invention,
6 and 7 are conceptual diagrams of a PLC optical module for an optical wavelength power meter according to another embodiment of the present invention,
8 and 9 are conceptual views illustrating a PLC optical module for an optical wavelength power meter according to another embodiment of the present invention.

Hereinafter, a PLC type optical module for an optical wavelength power meter according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific form disclosed, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements. In the accompanying drawings, the dimensions of the structures are shown in an enlarged scale than actual for clarity of the invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

1 to 4 illustrate a PLC type optical module for an optical wavelength power meter according to the present invention.

Referring to the drawings, the PLC optical module for the optical wavelength power measuring device is connected to the main body 110, an input unit 120 for receiving a multi-wavelength input optical signal from a light source, and the input unit 120 is connected to the input unit 120 An optical wavelength distribution unit 130 for dividing and outputting the input optical signal inputted through a plurality of branched optical signals having a single wavelength band, and having a plurality of output waveguides 132 for outputting the branched optical signals independently. And a detection unit 210 coupled to the optical wavelength distributor 130 to detect the branched optical signals output from the optical wavelength distributor 130.

The main body 110 may input an operation signal to the optical wavelength distribution unit 130 to simultaneously measure wavelengths from the display unit 160, the power button unit 111, and the optical wavelength distribution unit 130 on the outer surface. The scan button 112, the graph button 113 for inputting an input signal to the display unit 160 to display the wavelength measured by the detection unit 210, the light source to be measured using a connector A USB connector 115 is provided to which an external device is connected so as to transmit data detected through the adapter unit 114 and the detector 230 which can be connected to the outside. An optical wavelength distribution unit 130 and a detection unit 210 are installed inside the main body 110.

The input unit 120 is installed inside the main body 110 and is connected to the adapter unit 114 of the main body 110 to receive the multi-wavelength input optical signal input from the light source. In this case, a measurement target light source is a WDM (Wavelength Division Multiplexing) light source, and the WDM means that a plurality of channels having different wavelengths of light are bundled and transmitted through one optical fiber. WDM may be understood to include Coarse Wavelength Division Multiplexing (CWDM) and Dense Wavelength Divisoin Multiplexing (DWDM), but is not limited thereto. Meanwhile, the input unit 120 is connected to the input waveguide 131 of the optical wavelength distribution unit 130 by an optical cable and transmits the received input optical signal to the optical wavelength distribution unit 130.

The optical wavelength distribution unit 130 is mounted on the main body 110 to branch and output the input optical signal input through the input unit 120 into a plurality of branched optical signals and an aligned optical signal having a single wavelength band. The optical wavelength distribution unit 130 may combine light of several wavelengths into a single light beam, and conversely, a waveguide optical element may be applied, which may serve as a prism that may split light of one light beam into wavelengths. The optical wavelength distribution unit 130 is provided with waveguide matrices having different radii of curvature, and the time that light passes through the waveguide varies depending on the length of the waveguide, that is, the radius of curvature of the waveguide. As it passes through the slab, the light bends in a constant direction. Since the refractive index of the waveguide varies depending on the wavelength, the bending angle of the light also varies according to the wavelength, whereby light of a plurality of wavelengths may be split in the plurality of waveguides provided at the end of the optical wavelength divider 130.

The optical wavelength distributor 130 includes an input waveguide 131 connected to the input unit 120 at the front side, and a plurality of output waveguides 132 and alignment waveguides 133 which independently output the branched optical signals at the rear thereof. Is formed. The input waveguide 131, the output waveguides 132, and the alignment waveguide 133 may be formed inside the optical wavelength distribution unit 130.

The output waveguide 132 extends rearward with respect to the input waveguide 131, and a plurality of output waveguides 132 are arranged to be spaced apart from each other in one direction, that is, in a left and right direction based on the drawing, at the rear end of the light wavelength distribution unit 130.

The alignment waveguide 133 extends rearward with respect to the input waveguide 131, and a plurality of the alignment waveguides 133 are formed to be positioned at the outermost side with respect to the arrangement direction of the output waveguides 132.

The light wavelength distribution unit 130 is applicable to both Athermal and Thermal structures. On the other hand, the optical wavelength distribution unit 130 is preferably formed such that the wavelength interval between the waveguides, that is, the wavelength interval between the output waveguides 132 and the alignment waveguide 133 is 100GHz, 50GHz or 20nm.

The detection unit 210 is coupled to the optical wavelength distribution unit, and a plurality of connection waveguides 221 connected to the output terminals of the output waveguides 132 are configured to receive the branched optical signal from the output waveguide 132. A detector 230 including a coupling part 220 formed and a plurality of optical sensors 231 respectively installed on the output waveguides 132 to detect the branched optical signals inputted to the output waveguide 132. It is provided.

The coupling part 220 has a plurality of connection waveguides 221 formed therein. The connection waveguide 221 is easily coupled to the output waveguide 132 when the coupling part 220 is coupled to the optical wavelength distribution unit 130. The output waveguides 132 may be spaced apart from each other along the left and right directions so as to communicate with each other. Here, the connecting waveguides 221 extend rearward, and an output terminal for outputting a branch optical signal to the rear end is provided.

In addition, the coupling part 220 is formed on the connection waveguide 221, a plurality of installation grooves 222 for the optical sensor 231 of the detector 230 is formed.

The installation groove 222 is formed to be pulled downward on the upper surface of the coupling portion 220 corresponding to the connection waveguide 221, the branch optical signal passing through the connection waveguide 221 can be irradiated to the installation groove 222. It is preferable to be formed to have a depth greater than the depth from the upper surface of the coupling portion 220 to the connection waveguide 221. Further, a mirror 223 is provided on the rear inner wall of the installation groove 222 so that the branch optical signal passing through the connection waveguide 221 can be reflected above the installation groove 222.

On the other hand, the coupling unit 220 is formed with a plurality of detection waveguides 226 formed to correspond to the alignment waveguide 133 so as to easily communicate with the alignment waveguide 133 when coupled to the optical wavelength distribution unit 130 is formed have.

Here, it is preferable that a plurality of detection waveguides 226 are formed in the plurality of connection waveguides 221 located at the outermost side with respect to the arrangement direction of the connection waveguides 221, respectively.

In this case, although not shown in the drawing, the terminal unit to which the external detection device is connected may be connected to an output terminal of the detection waveguide 226 so that the alignment optical signal input to the detection waveguide 226 may be output to the outside and detected by the external detection device. May be provided. The external detection device is installed at an output end of the detection waveguide 226 through the terminal part to detect power and wavelength of an optical signal output through the output end.

As described above, the optical wavelength distribution unit 130 branches some of the optical signals branched by the wavelength into the alignment waveguide 133 as the alignment optical signal, and externally detects the optical signal branched into the alignment waveguide 133. Since the output to the outside to detect the operator can easily determine whether the failure based on the information on the wavelength of the optical signal output from the alignment waveguide 133.

The detector 230 includes a plurality of optical sensors 231 installed in the installation grooves 222 of the coupling unit 220 to detect the branched optical signals output from the optical wavelength distribution unit 130. The optical sensors 231 are installed on the upper surface of the coupling part 220 to be connected to the installation grooves 222, respectively.

The display unit 160 quantizes and displays the optical wavelength and the optical power detected by the detector 230 and includes a display panel provided on an outer surface of the main body 110. The display panel may be an LED panel or an LCD panel. Although not shown in the drawings, the display unit 160 may further include a selection switch unit (not shown) for displaying the numerical values of the optical wavelength and the optical power displayed on the display panel together or selectively displaying either of them. have. The selection switch unit is preferably installed on the outer surface of the main body 110 so that the operator can easily operate.

The multi-wavelength input optical signal input from the light source connected to the adapter unit 114 of the main body 110 is transmitted to the optical wavelength divider 130 through the input unit 120, and the optical wavelength divider 130 transmits the input optical signal to each single signal. The signal is branched into a plurality of branched optical signals having a wavelength band and output to the detector 230. In this case, the optical sensors 231 of the detector 230 are directly connected to the output waveguides 132 of the optical wavelength divider 130 without detecting through the optical fiber to detect each branch optical signal. The optical wavelength and the optical power detected by the optical sensor 231 are displayed to the worker through the display unit 160.

PLC type optical module for optical wavelength power measuring device according to the present invention configured as described above is added to the output terminal of the AWG for dividing the optical wavelength, one or more upper and lower ports of the same interval of the signal stage, or in the structure of the same optical distribution unit The optical distribution is connected to the top channel and the lowest channel of the system so that some of the optical signals branched by the wavelength can be branched and output to align and bond the input stages, which makes it easier for the operator to understand the assembly state of the optical distribution unit and detector. There is this.

Meanwhile, as illustrated in FIG. 5, a plurality of optical wavelength power meters may be arranged along one direction to form a curved structure.

6 and 7 show a coupling unit 220 according to another embodiment of the present invention.

Elements having the same function as in the above-described drawings are denoted by the same reference numerals.

Referring to the drawings, the coupling unit 220 detects the alignment optical signal input to the detection waveguide 226 so that the alignment optical signal can be output to the outside through the output terminal of the connection waveguide 221 to be detected by an external detection device. An end portion of the waveguide 226 is formed to be connected to the connection waveguide 221.

Here, the end of the branch waveguide 224 is connected to the connection waveguide 221 so that the optical signal input to the detection waveguide 226 is output to the outside through the output terminal of the connection waveguide 221 and detected by an external detection device. It is formed to be connected to the connecting waveguide 221 at a position spaced rearward from the installation groove 222 with respect to the moving direction of the branch optical signal therein. The external detection device is installed at an output end of the connection waveguide 221 and detects power and wavelength of an alignment optical signal output through the output end. The operator can grasp the assembly state or the manufacturing state of the optical wavelength distribution unit based on the information on the power and wavelength of the alignment optical signal output from the external detection device.

Meanwhile, ends of the detection waveguides 226 may be connected to the plurality of connection waveguides 221 located at the outermost side with respect to the arrangement direction of the connection waveguides 221.

As described above, the coupling unit 220 has an end portion of the detection waveguide 226 connected to the connection waveguide 221, so that an alignment optical signal of the detection waveguide 226 may be output through an output end of the connection waveguide 221. It is possible to easily detect the optical signal output from the branch waveguide 224 through a conventional external detection device.

8 and 9 illustrate an optical wavelength distribution unit 130 and a coupling unit 220 according to still another embodiment of the present invention.

Referring to the drawings, the optical wavelength distribution unit 130 includes only the output waveguide 132 to output the branch optical signal except for the alignment waveguide 133. In addition, the coupling unit 220 diverges from some of the connection waveguides 221 so as to branch and output some of the branch optical signals input to the connection waveguide 221 instead of the detection waveguide 226. 224 is formed.

Here, it is preferable that a plurality of branch waveguides 224 are respectively formed in the plurality of connection waveguides 221 located at the outermost side with respect to the arrangement direction of the connection waveguides 221. In this case, a tap coupler 225 is provided at a branch of the branch waveguide 224 with respect to the connection waveguide 221, and a part of the branch optical signal of the connection waveguide 221 is divided by the tap coupler 225. 224). In this case, the tap coupler 225 branches the branched optical signal to have a power corresponding to 2% of the branched optical signal power input to the connection waveguide 221 and outputs the branched optical signal to the branched waveguide 224.

In this case, an optical signal input to the branch waveguide 224 is output to the outside through the output terminal of the connection waveguide 221 to be detected by an external detection device so as to move the direction of the branch optical signal in the connection waveguide 221. An end of the branch waveguide 224 is formed to be connected to the connection waveguide 221 at a position spaced rearwardly from the installation groove 222. The external detection device is installed at an output end of the connection waveguide 221 and detects power and wavelength of an optical signal output through the output end.

Here, the ends of the branch waveguides 224 are connected to the plurality of connection waveguides 221, that is, the branch waveguides 224 which are branched outwardly based on the arrangement direction of the connection waveguides 221. 221 is preferably connected.

As described above, the combiner 220 branches a part of the branched optical signal branched by the wavelength in the optical wavelength distribution unit 130 to the branched waveguide 224 and externally detects the optical signal branched to the branched waveguide 224. Since the output to the outside to detect the operator can easily determine the assembly state of the coupling unit based on the information on the wavelength of the optical signal output from the branch waveguide 224. In addition, since the end of the branch waveguide 224 is connected to the connection waveguide 221, the optical signal of the branch waveguide 224 can be output through the output terminal of the connection waveguide 221, so that the branch waveguide ( The optical signal output from 224 can be easily detected.

The description of the presented embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention should not be limited to the embodiments set forth herein but should be construed in the broadest scope consistent with the principles and novel features set forth herein.

100: PLC type optical module for optical wavelength power meter
110: main body
111: power button unit
112: scan button unit
113: graph button section
114: adapter unit
115: USB connector
120: input unit
130: light wavelength distribution unit
131: input optical waveguide
132: output optical waveguide
210: detection unit
220: coupling part
221: connecting waveguide
224: branch waveguide
225: tab coupler
230: detector
231: light sensor

Claims (8)

An input unit to which an input optical signal of multiple wavelengths is input from a light source;
A plurality of branched optical signals having a single wavelength band and a plurality of aligned optical signals which are outputted by being connected to the input unit and inputted through the input unit, and outputting the branched optical signals independently An optical wavelength distribution unit including a plurality of output waveguides and a plurality of alignment waveguides for outputting the alignment optical signals; And
A detection unit coupled to the optical wavelength distribution unit for detecting the branched optical signals inputted to the output waveguide, and outputting the aligned optical signal inputted from the alignment waveguide to the outside for assembly state inspection; and,
The optical wavelength distribution unit is formed such that the two alignment waveguides are positioned at the outermost sides of one side and the other side with respect to the arrangement direction of the output waveguides, respectively.
PLC type optical module for optical wavelength power meter.
delete The method of claim 1,
The detection unit
A plurality of connection waveguides coupled to the optical waveguide divider, the plurality of connection waveguides connected to the output waveguides so that the branched optical signal can be input from the output waveguide, and the alignment optical signal from the alignment waveguide; A coupling part provided with a detection waveguide having one end connected to the phosphor waveguide; And
And a detector including a plurality of optical sensors respectively provided on the connection waveguides for detecting the branched optical signals inputted into the connection waveguide.
The coupling unit has the other end of the detection waveguide based on the output direction of the branch optical signal so that the alignment optical signal input to the detection waveguide can be output to the outside through the output terminal of the connection waveguide and detected by an external detection device. Is connected to the connection waveguide behind the optical sensor,
The detection waveguides are formed such that the other ends thereof are respectively connected to the plurality of connection waveguides located at the outermost side with respect to the arrangement direction of the connection waveguides.
PLC type optical module for optical wavelength power meter.
delete An input unit to which an input optical signal of multiple wavelengths is input from a light source;
An optical wavelength having a plurality of output waveguides for outputting the branched optical signals independently of each other by outputting the branched optical signals which are connected to the input unit and are divided into a plurality of branched optical signals each having a single wavelength band. Distribution unit;
Coupled to the optical wavelength distribution unit, a plurality of connection waveguides connected to the output waveguides and a portion of the branching optical signal inputted to the connection waveguide to output the branched optical signal from the output waveguide to output. A coupling part having a plurality of branch waveguides branched from the connection waveguide to be formed; And
And a detector including a plurality of optical sensors respectively provided on the connection waveguides for detecting the branched optical signals inputted into the connection waveguide.
Wherein the coupling portion is formed in each of the two connecting waveguides located in the outermost of the one and the other side of the branch waveguide relative to the arrangement direction of the waveguide,
PLC type optical module for optical wavelength power meter.
delete The method of claim 5,
The branch waveguides have an end portion connected to the connection waveguide behind the optical sensor based on an output direction of the branch optical signal so that the input branch optical signal is output to the outside through the output terminal of the connection waveguide and detected by an external detection device. Is formed to be connected, Formed to be connected to the connection waveguides respectively located on the outermost side of one side and the other side with respect to the array direction of the connection waveguides,
PLC type optical module for optical wavelength power meter.
delete

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