CN110391844A - Optical transceiver module, wavelength of light method of adjustment and device - Google Patents

Optical transceiver module, wavelength of light method of adjustment and device Download PDF

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Publication number
CN110391844A
CN110391844A CN201810344446.4A CN201810344446A CN110391844A CN 110391844 A CN110391844 A CN 110391844A CN 201810344446 A CN201810344446 A CN 201810344446A CN 110391844 A CN110391844 A CN 110391844A
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China
Prior art keywords
light
reflection
transmitter
wavelength
transmitting
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Granted
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CN201810344446.4A
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Chinese (zh)
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CN110391844B (en
Inventor
杨巍
杨波
黄新刚
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ZTE Corp
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ZTE Corp
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Priority to CN201810344446.4A priority Critical patent/CN110391844B/en
Priority to PCT/CN2018/108580 priority patent/WO2019200845A1/en
Publication of CN110391844A publication Critical patent/CN110391844A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07955—Monitoring or measuring power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/40—Transceivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring

Abstract

The present invention provides a kind of optical transceiver module, wavelength of light method of adjustment, device, Wave division multiplexing passive optical network, storage medium and electronic devices, wherein the optical transceiver module includes: transmitter, for emitting light；Receiver, for receiving light；Light standard tool, between the transmitter and the receiver, for separating the light and the received light of receiver of transmitter transmitting.By the invention it is possible to which the wavelength resource for solving the problems, such as that uplink and downlink light present in the relevant technologies needs to occupy is excessive, achieving the effect that, which reduces wavelength resource, is occupied.

Description

Optical transceiver module, wavelength of light method of adjustment and device
Technical field
The present invention relates to the communications field, in particular to a kind of optical transceiver module, wavelength of light method of adjustment, device, Wave division multiplexing passive optical network, storage medium and electronic device.
Background technique
Continuous promotion and the 5th third-generation mobile communication technology (the 5th with user to bandwidth demand and delay requirement Generation mobile communication technology, referred to as 5G) carrying brought by low time delay is wanted It asks, access field needs hoist capacity and reduces time delay.Wave division multiplexing passive optical network (Wavelength Division Multiplexing Passive Optical Network, referred to as WDM PON) be large capacity low time delay a good choosing It selects.In WDM PON, each user can exclusively enjoy a wavelength channel, therefore avoid time division multiplexing bring delay.And With the continuous promotion of single wavelength modulation rate, each user bandwidth can also constantly increase.Fig. 1 is in the related technology A kind of system block diagram of WDM PON, each ONU and OLT uplink and downlink use a pair of of wavelength (λ d, λ u), different uplink and downlink wavelength By wavelength division multiplexer (WDM) multiplex, into a trunk optical fiber.
Array waveguide grating (Arrayed Waveguide Grating, referred to as AWG) realization can be used in WDM.Usually In the case of, uplink and downlink wavelength is all located at the center of each port transmission window of AWG, as shown in Figure 2.
Assuming that uplink and downlink respectively has n wavelength channel, each wavelength channel interval is denoted as Δ f.For same a pair of of uplink and downlink wave It is long, they by the same port AWG, port AWG can by wavelength be periodically that the period is known as free spectrum Range (Free Spectral Range, referred to as FSR), therefore uplink and downlink wavelength interval is FSR.In this way, in total The band resource of occupancy is 2n Δ f.The wavelength logarithm n of WDM PON is generally 32 or higher, in the light that wavelength resource is so in short supply The communications field will lead to the excessive problem of the wavelength resource of occupancy.
For the above problem present in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
The embodiment of the invention provides a kind of optical transceiver module, wavelength of light method of adjustment, device, Wavelength division multiplexing-passive light Network, storage medium and electronic device, at least to solve the wavelength resource that uplink and downlink light present in the relevant technologies needs to occupy Excessive problem.
According to one embodiment of present invention, a kind of optical transceiver module is provided, comprising: transmitter, for emitting light； Receiver, for receiving light；Light standard tool, between the transmitter and the receiver, for separating the transmitting The light and the received light of the receiver of device transmitting.
Optionally, the three of the transmitter, the receiver and light standard tool present position form right angle triangle A vertex, wherein the transmitter has the first straight flange that the light emitted is the right angled triangle to the light standard, described Receiver has the second straight flange that received light is the right angled triangle, the center of the light standard tool by the light standard Line is the bevel edge of the right angled triangle, and the center line is the center line of light standard tool along inclined direction.
Optionally, when the light of transmitter transmitting is transmitted using the transmission window that the light standard has, and institute When stating the received light of receiver and being transmitted using the reflection windows that the light standard has, the optical transceiver module further includes One optical detector, the second optical detector and the first controller, wherein first optical detector is located at the biography of the first reflection light On defeated path, for detecting the power of the first reflection light, wherein first reflection light be the transmitter transmitting and The light reflected by the first transflection injection device；Second optical detector is located in the transmission path of the second reflection light, uses Emit the power of light in detection second, wherein second reflection light is that the transmitter emits and passes through the light The light of etalon reflection, or be light transmitter transmitting and by the reflection of the second transflection injection device；Described One controller is connected to first optical detector and second optical detector, and first controller is used for according to described the The wavelength of the light of the transmitting of transmitter described in the power regulation of the power of one reflection light and second reflection light.
Optionally, first controller is used for the temperature by adjusting the transmitter to adjust the transmitter transmitting Light wavelength.
Optionally, the optical transceiver module further includes the first semiconductor cooler TEC, wherein the first TEC is used for The temperature of the transmitter is adjusted under the control of first controller.
Optionally, including at least one of: when light standard tool is located at the transmitter and first transflector When between device, first reflection light be transmitter transmitting and first pass through after light standard tool refraction using Light after the first transflection injection device reflection, second reflection light are that the transmitter emits and pass through the light The light of etalon reflection；It is described when the first transflection injection device is located between the transmitter and light standard tool First reflection light is light transmitter transmitting and after the first transflection injection device reflection, and described second is anti- Penetrate light be transmitter transmitting and after first passing through the first transflection injection device transmission, have using the light standard anti- Light after penetrating；Between the first transflection injection device is located at the transmitter and the light standard has, and, the light standard When tool is between the first transflection injection device and the second transflection injection device, first reflection light is the transmitting Light that device emits and after the first transflection injection device reflection, second reflection light are transmitter transmitting And after first passing through the first transflection injection device transmission, after light standard tool refraction, thoroughly using described second Light after reflection unit reflection.
Optionally, when the received light of the receiver is transmitted using the transmission window that the light standard has, and institute The light of transmitter transmitting is stated when being transmitted using the reflection windows that the light standard has, the optical transceiver module further includes the Three optical detectors, the 4th optical detector and second controller, wherein the third optical detector is located at the biography of third reflection light On defeated path, for detecting the power of third reflection light, wherein the third reflection light be the transmitter transmitting and The light reflected by third transflection injection device；4th optical detector is located in the transmission path of transflector light, is used for The power for penetrating light is returned in detection thoroughly, wherein described return is penetrated that light emits for the transmitter and had by the light standard The light of transmission, or be light transmitter transmitting and by the reflection of the 4th transflection injection device；Second control Device is connected to the third optical detector and the 4th optical detector, and the second controller is used to be reflected according to the third The wavelength of the light of the transmitting of transmitter described in the power regulation of the power of light and the transflector light.
Optionally, the second controller is used for the temperature by adjusting the transmitter to adjust the transmitter transmitting Light wavelength.
Optionally, the optical transceiver module further includes the second semiconductor cooler TEC, wherein the 2nd TEC is used for The temperature of the transmitter is adjusted under the control of the second controller.
Optionally, including at least one of: when light standard tool is located at the transmitter and the third transflector When between device, the third reflection light be transmitter transmitting and first pass through after light standard tool reflection using Light after the first transflection injection device reflection, the transflector light are that the transmitter emits and pass through the cursor The light of quasi- tool transmission；When the third transflection injection device is located between the transmitter and light standard tool, described the Three reflection lights are light transmitter transmitting and after third transflection injection device reflection, the transflector light Line be transmitter transmitting and after first passing through third transflection injection device transmission, after light standard tool transmission Light；Between the first transflection injection device is located at the transmitter and the light standard has, and, the light standard has position When between the third transflection injection device and the 4th transflection injection device, the third reflection light is transmitter hair Light penetrating and after third transflection injection device reflection, the transflector light are transmitter transmitting and first After third transflection injection device transmission, after light standard tool reflection, filled using the 4th transflector Light after setting reflection.
Optionally, the optical transceiver module further includes isolator, wherein when between the transmitter and light standard tool When without transflection injection device, the isolator is located between the transmitter and light standard tool, passes through the light for being isolated Etalon reaches the light on the transmitter；Alternatively, when being provided with transflector between the transmitter and light standard tool When device, the isolator is filled for being isolated by the transflector between the transmitter and the transflection injection device Set the light reached on the transmitter.
Optionally, the parameter of the light standard tool is predetermined according at least one following information: the hair The type and the received light needs of the optical receiver of the window for the light standard tool that the light that emitter is sent needs to utilize The type of the window of the light standard tool utilized；The relative position of the transmitter, the receiver and light standard tool Relationship；The frequency chirp that the transmitter generates after having carried out signal modulation.
According to another embodiment of the invention, a kind of wavelength of light method of adjustment is provided, any of the above-described is applied to In the optical transceiver module, when the transmitter transmitting light transmitted using the transmission window that the light standard has, And the receiver received light using the reflection windows that the light standard has when being transmitted, which comprises is obtained The power of the first reflection light detected, wherein first reflection light is that the transmitter emits and passes through first The light of transflection injection device reflection；Obtain the power of the second transmitting light detected, wherein second reflection light is institute State transmitter transmitting and by the light standard tool reflection light, or for the transmitter transmitting and by second thoroughly The light of reflection unit reflection；According to the power regulation of the power of first reflection light and second reflection light The wavelength of the light of transmitter transmitting.
Optionally, emit according to the power regulation of the power of first reflection light and second reflection light The wavelength of the light of device transmitting includes: the power regulation of the power according to first reflection light and second reflection light The temperature of the transmitter, to adjust the wavelength of the light of the transmitter transmitting.
According to one embodiment of present invention, another wavelength of light method of adjustment is additionally provided, is applied to any of the above-described In optical transceiver module described in, when the received light of the receiver is passed using the transmission window that the light standard has It is defeated, and the light of transmitter transmitting using the reflection windows that the light standard has when being transmitted, which comprises it obtains Take the power of the third reflection light detected, wherein the third reflection light be transmitter transmitting and by the The light of three transflection injection devices reflection；Obtain detect return the power for penetrating light thoroughly, wherein it is described to return that penetrate light be described Transmitter transmitting and by the light standard tool transmission light, or for the transmitter transmitting and pass through the 4th transflection The light of injection device reflection；Emit according to the power regulation of the power of the third reflection light and the transflector light The wavelength of the light of device transmitting.
Optionally, the transmitter according to the power regulation of the power of the third reflection light and the transflector light The wavelength of the light of transmitting includes: according to the power regulation of the power of the third reflection light and the transflector light The temperature of transmitter, to adjust the wavelength of the light of the transmitter transmitting.
According to one embodiment of present invention, a kind of wavelength of light adjustment device is additionally provided, any of the above-described is applied to In the optical transceiver module, when the transmitter transmitting light transmitted using the transmission window that the light standard has, And the receiver received light, when being transmitted using the reflection windows that the light standard has, described device includes: first Module is obtained, for obtaining the power of the first reflection light detected, wherein first reflection light is the transmitter Light emitting and by the reflection of the first transflection injection device；Second obtains module, for obtaining the detect second transmitting light The power of line, wherein second reflection light is light transmitter transmitting and by light standard tool reflection, It or is light transmitter transmitting and by the reflection of the second transflection injection device；First adjustment module, for according to institute State the wavelength of the light of the transmitting of transmitter described in the power of the first reflection light and the power regulation of second reflection light.
Optionally, first adjustment module includes: the first adjusting unit, for the function according to first reflection light The temperature of transmitter described in the power regulation of rate and second reflection light, to adjust the wave of the light of the transmitter transmitting It is long.
According to one embodiment of present invention, another wavelength of light adjustment device is additionally provided, is applied to any of the above-described In optical transceiver module described in, when the received light of the receiver is passed using the transmission window that the light standard has Defeated, and the light of transmitter transmitting is using the reflection windows that the light standard has when being transmitted, described device includes: the Three obtain module, for obtaining the power of the third reflection light detected, wherein the third reflection light is the transmitting Light that device emits and by the reflection of third transflection injection device；4th obtains module, penetrates light for obtaining saturating return detected The power of line, wherein described return penetrates the light that light is that the transmitter emits and has transmission by the light standard, or Person is light transmitter transmitting and by the reflection of the 4th transflection injection device；Second adjustment module, for according to The wavelength of the light of the transmitting of transmitter described in the power regulation of the power of third reflection light and the transflector light.
Optionally, second adjustment module includes: the second adjusting unit, for the function according to the third reflection light The temperature of transmitter described in rate and the power regulation of the transflector light, to adjust the wave of the light of the transmitter transmitting It is long.
According to one embodiment of present invention, a kind of Wave division multiplexing passive optical network, including fibre circuit end are additionally provided Hold OLT, wavelength division multiplexer WDM, optical network unit ONU, wherein include one or more first optical modules, institute in the OLT Stating the first optical module includes optical transceiver module described in any of the above embodiments；The WDM is connect with the OLT；The ONU with it is described WDM connection, the quantity of the ONU are one or more, and one or more second optical modules, institute are respectively included in each ONU Stating the second optical module includes optical transceiver module described in any of the above embodiments.
According to still another embodiment of the invention, a kind of storage medium is additionally provided, meter is stored in the storage medium Calculation machine program, wherein the computer program is arranged to execute the step in any of the above-described embodiment of the method when operation.
According to still another embodiment of the invention, a kind of electronic device, including memory and processor are additionally provided, it is described Computer program is stored in memory, the processor is arranged to run the computer program to execute any of the above-described Step in embodiment of the method.
Through the invention, be utilized in optical transceiver module the light standard light that is emitted of tool and received light (that is, Uplink and downlink light) separation, the close uplink and downlink in wavelength interval can be put into the isolated purpose of row by realizing, relative to related skill For art, half is at least reduced using the wavelength resource that light standard tool can make uplink and downlink light occupy, therefore, can solve phase The problem that uplink and downlink light present in the technology of pass needs the wavelength resource occupied excessive, reaching reduces the effect that wavelength resource occupies Fruit.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of system block diagram of WDM PON in the related technology；
Fig. 2 is the center schematic diagram that uplink and downlink wavelength in the related technology is all located at each port transmission window of AWG；
Fig. 3 is the structural block diagram of optical transceiver module according to an embodiment of the present invention；
Fig. 4 is etalon operation principle schematic diagram according to embodiments of the present invention；
Fig. 5 is the transmissivity of etalon according to an embodiment of the present invention and the mechanical periodicity schematic diagram one of reflectivity；
Fig. 6 is the transmissivity of etalon according to an embodiment of the present invention and the mechanical periodicity schematic diagram two of reflectivity；
Fig. 7 is the wavelength locker schematic diagram one of specific embodiment 1 according to the present invention；
Fig. 8 is the transmission peak wavelength of specific embodiment 1 and transmissivity corresponding relationship one according to the present invention；
Fig. 9 is the transmission peak wavelength of specific embodiment 1 and transmissivity corresponding relationship two according to the present invention；
Figure 10 is the transmission peak wavelength of specific embodiment 1 and transmissivity corresponding relationship three according to the present invention；
Figure 11 is the wavelength locker schematic diagram two of specific embodiment 1 according to the present invention；
Figure 12 is the wavelength locker schematic diagram three of specific embodiment 1 according to the present invention；
Figure 13 is the spectral schematic one of specific embodiment 1 according to the present invention；
Figure 14 is the spectral schematic two of specific embodiment 1 according to the present invention；
Figure 15 is the structural block diagram of the optical transceiver module of specific embodiment 2 according to the present invention；
Figure 16 is the wavelength locker schematic diagram one of specific embodiment 2 according to the present invention；
Figure 17 is the wavelength locker schematic diagram two of specific embodiment 2 according to the present invention；
Figure 18 is the wavelength locker schematic diagram three of specific embodiment 2 according to the present invention；
Figure 19 is the flow chart of the first wavelength of light method of adjustment according to an embodiment of the present invention；
Figure 20 is the flow chart of second of wavelength of light method of adjustment according to an embodiment of the present invention；
Figure 21 is the structural block diagram of the first wavelength of light adjustment device according to an embodiment of the present invention；
Figure 22 is the structural block diagram of second of wavelength of light adjustment device according to an embodiment of the present invention；
Figure 23 is optical module schematic diagram according to an embodiment of the present invention；
Figure 24 is WDM PON system schematic diagram according to an embodiment of the present invention；
Figure 25 is showing for the wave-length coverage that uplink and downlink wavelength according to an embodiment of the present invention occupies and the window corresponding to AWG It is intended to.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, " Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.
Embodiment in the present invention can be adapted for soft exchange field, propose in embodiments of the present invention a kind of using light Etalon (etalon) separates uplink and downlink wavelength, reduces WDM PON operating wavelength range, and realizes the light transmitting-receiving one of wavelength locking Body component BOSA, optical module and system.
Below with reference to examples illustrate the present invention:
Embodiment 1
According to one embodiment of present invention, a kind of optical transceiver module is provided, (Fig. 3 is only that one kind is shown as shown in Figure 3 Example), comprising: transmitter (corresponding to the Tx in Fig. 3), for emitting light；Receiver (corresponding to the Rx in Fig. 3), for connecing Receive light；Light standard has (corresponding to the etalon in Fig. 3), between the transmitter and the receiver, for separating The light and the received light of receiver of transmitter transmitting.In the present embodiment, optical transceiver module can be BOSA, such as Fig. 3 institute Show, which has emitter Tx, reception device Rx and etalon.Etalon is placed on some position between Tx and Rx, By the way that the parameters of etalon and the relative position of adjustment Tx, Rx and etalon are reasonably arranged, separation wavelength can achieve Purpose apart from close uplink and downlink light.
In an alternative embodiment, above-mentioned transmitter, receiver and light standard have present position form right angle triangle Three vertex of shape, wherein first straight flange of the light that the transmitter emits to light standard tool for right angled triangle, the receiver Has the second straight flange that received light is right angled triangle by light standard, the center line of light standard tool is right angled triangle Bevel edge, the center line are the center line of light standard tool along inclined direction.In the present embodiment, when transmitter, receiver and cursor When quasi- tool is arranged at right angled triangle, the inclination angle of light standard tool is 45 °, it should be noted that 45 ° of light standard tool inclination is only It is an optional embodiment, the inclination angle of light standard tool can be 0 ° to 90 ° any one angle in actual operation, It needs to be adjusted in different tilt angles, the parameter of corresponding light standard tool.It should be noted that transmitter, receiver It is only a kind of optional form with light standard tool present position form right angle triangle, the positional relationship of three is also possible to other Form (for example, three constitutes congruent triangles, three constitutes obtuse triangle), as long as the light of transmitting and can will connect The light (that is, uplink and downlink light) of receipts separates.
In an alternative embodiment, the light of transmitter transmitting can use the transmission window of light standard tool, can also With using the reflection windows of light standard, the received light of receiver can use the reflection windows of light standard tool, also can use The transmission window of light standard tool.The light of transmitting and received light, which may be implemented, in parameter by adjusting light standard tool makes The window of light standard tool.When the light of transmitter transmitting is transmitted using the transmission window that the light standard has, and connect When the receipts received light of device is transmitted using the reflection windows that the light standard has, above-mentioned optical transceiver module further includes the first light Detector, the second optical detector and the first controller, wherein first optical detector is located at the transmission path of the first reflection light On, for detecting the power of the first reflection light, wherein first reflection light is that transmitter emits and passes through the first transflection The light of injection device reflection；Second optical detector is located in the transmission path of the second reflection light, for detecting the second transmitting The power of light, wherein second reflection light is light transmitter transmitting and by light standard tool reflection, or is hair Light that emitter emits and by the reflection of the second transflection injection device；First controller is connected to the first optical detector and second Optical detector, the first controller are used for the power regulation transmitter of the power and the second reflection light according to the first reflection light The wavelength of the light of transmitting.In the present embodiment, the type of the first transflection injection device and the second transflection injection device can there are many, For example, can use 95/5 transflection injection device.Through this embodiment, the wavelength lock of the light emitted transmitter may be implemented It is fixed.
In an alternative embodiment, above-mentioned first controller is used for the temperature by adjusting transmitter to adjust transmitting The wavelength of the light of device transmitting.In the present embodiment, the temperature for increasing transmitter can correspond to the light for increasing transmitter transmitting Wavelength, reduce transmitter temperature can correspond to reduce transmitter transmitting light wavelength.It should be noted that controller Adjust transmitter temperature mode can there are many, for example, can use semiconductor cooler (Thermo Electric Cooler, referred to as TEC) adjust the temperature of transmitter, in the present embodiment, above-mentioned optical transceiver module further includes the first half leading Chiller TEC, wherein the first TEC under the control of the first controller for adjusting the temperature of transmitter.In the present embodiment In, TEC can be attached on transmitter (such as laser) chip.
In an alternative embodiment, transmitter, light standard tool, the first transflection injection device and the second transflection injection device Between positional relationship there are many, under different positional relationships, the first reflection light be can be different, the second reflection light It is also possible to different, different positional relationships and corresponding first reflection light and the second reflection light is said below It is bright:
Situation 1: when above-mentioned light standard tool is between transmitter and the first transflection injection device, above-mentioned first reflection light For transmitter transmitting and first pass through light standard tool refraction after using the first transflection injection device reflection after light, second reflection Light is light transmitter transmitting and by light standard tool reflection；And/or
Situation 2: when the first transflection injection device is located between transmitter and light standard tool, the first reflection light is transmitter Light emitting and after the reflection of the first transflection injection device, the second reflection light are that transmitter emits and first pass through first After the transmission of transflection injection device, using the light after light standard tool reflection；And/or
Situation 3: between the first transflection injection device is located at transmitter and light standard has, and, light standard tool is located at first thoroughly When between reflection unit and the second transflection injection device, the first reflection light is that transmitter emits and passes through the first transflection injection device Light after reflection, the second reflection light be transmitter transmitting and first pass through the first transflection injection device transmission after, using light After etalon refraction, using the light after the reflection of the second transflection injection device.
Below by taking optical transceiver module is BOSA as an example, the wavelength locking processing under above-mentioned different positional relationship is said It is bright:
Specific embodiment 1
Emitting light using inclination etalon separation inside BOSA and receives light, transmitting light utilizes the transmission window of etalon, Receive the reflection windows that light utilizes etalon.Wavelength locking and chirp management function are realized by the way that some modules and design are added.
Etalon is the fabulous plate of a two sides depth of parallelism, and using Fabry-Perot interference principle, incident light exists Etalon multiple reflection inside is finally divided into two parts of transmitted light and reflected light.Properly select thickness and refractive index with And incidence angle, the transmission of adjustable etalon and reflection wavelength distribution.Etalon working principle is as shown in figure 4, set etalon With a thickness of l, refractive index n, two parallel planar reflective rates are R, and light incidence angle is θ, can derive transmittance function T Are as follows:
Wherein:
λ is incident wavelength, it can be seen that the transmissivity of etalon is in cyclically-varying with wavelength, therefore etalon can To regard a cycle filter as, for schematic diagram as shown in figure 5, in Fig. 5, horizontal axis is wavelength, and the longitudinal axis is transmissivity or reflection Rate, solid line are transmissivity T, and dotted line is reflectivity R, and transmissivity and reflectivity are in cyclically-varying with wavelength, and when T reaches When maximum value, R reaches minimum value, and when R reaches maximum value, T reaches minimum value, and R reaches when maximum value corresponding wavelength two The centre of the corresponding wavelength of a T maximum value, the sum of T and R are always 1.It, can by reasonably selecting etalon parameter and incident angle So that needed for T and R interval reach use, such as T peak-peak interval 100GHz, R peak-peak interval 100GHz, the peak-peak of T and R Between be divided into 50GHz, thus can well separate frequency interval be 50GHz transmitting light and receive light.
As shown in figure 3, inside a BOSA, Tx is emitter, and Rx is reception device, etalon be placed on Tx and Rx it Between some position, theoretically the inclination angle of etalon can be 0 ° to 90 ° any one degree, but the too small meeting in inclination angle It causes etalon and Tx or Rx to be unfavorable for minimizing apart from excessive, therefore is typically chosen 45 ° of inclination, Tx and Rx and etalon are in Right angled triangle.Also other angles be can choose, at this moment Tx, the relative position of Rx and etalon change, transmittance function Also opposite to change, it is constant if necessary to transmittance function, then need to change the parameter of etalon.In short, by suitably The parameter and opposite Tx, the position of Rx for selecting etalon can achieve the effect of Fig. 6, wherein in Fig. 6, solid line is transmission Rate, dotted line are reflectivity, wavelength of transmitted light λTPositioned at the maximum position of transmissivity, and reflectivity is minimum at this time, therefore sends out in Fig. 3 It penetrates the light overwhelming majority and can transmit etalon and enter AWG.Receive light wavelength lambdaRPositioned at the maximum position of reflectivity, and transmit at this time Rate is minimum, therefore the reception light overwhelming majority in Fig. 3 can be reflected into Rx by etalon, seldom through the light of etalon, Tx will not be impacted.
The corresponding wavelength of each maximum value of transmissivity can be launch wavelength in Fig. 6, and corresponding each reflectivity is most Big position can receive wavelength, and launch wavelength and the frequency interval received between wavelength are Δ f/2, two launch wavelengths Or two reception wavelength, i.e., the frequency interval of two interchannels is Δ f, this is the frequency interval of each port AWG.Have in this way There is the etalon of Fig. 6 property, can be applied to the corresponding optical transceiver module in each channel AWG, transmitting light can be separated well With reception light.
WDM PON uses dense wave division multipurpose, and the wavelength in each channel needs to stablize to occur big in a certain range Drift, otherwise can interfere other channels.Therefore it needs that wavelength locking function is added on emitter, corresponds to laser ( Above-mentioned transmitter) occur wave length shift when being capable of timely correction.The structure of Fig. 3 is increased to certain device and module, it can be with Realize the wavelength locking of BOSA transmitting light.
Fig. 7 (corresponding to above-mentioned situation 1) is a kind of wavelength locker realized using Fig. 3 structure, uses two light Detector PD1 (in specific embodiment 1, PD1 correspond to the second above-mentioned optical detector) and PD2 (in specific embodiment 1, PD2 corresponds to the first above-mentioned optical detector), wave length shift is determined using the ratio of the optical power of two optical detectors detection And launch wavelength is adjusted to realize wavelength locking.Purpose using two optical detectors is to eliminate the power swing of laser itself Bring influences.Three kinds of wavelength locking modes, positive slope locking, negative slope locking and extreme value locking (zero slope lock may be implemented It is fixed), various lock modes are illustrated below:
Positive slope locking:
As shown in figure 8, standard transmission peak wavelength λTIt is directed at the position that etalon transmittance graph rises, at this time transmittance graph Slope is positive value.When emitting light transmission etalon, a part of light transmission, another part light is reflected, and reflected light is connect by PD1 It receives, measures optical power P1, which enters calculating and control module (corresponding to above-mentioned controller).
Transmitted light using one 95/5 transflection injection device (also can use the transflection injection device of other ratios, for example, 99/1,90/10 etc.) 5% transmitted light, is reflected into PD2 to receive, 95% light enters AWG.PD2 measures optical power P2, should Electric signal enters calculating and control module.
When emitting light is nominal wavelength, the ratio R atio_Ref=P1/ that two power is calculated with control module is calculated P2, this is reference value.If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light in etalon Locate to transmit what reduction, reflection increase, corresponding two power Ps 1 increase, P2 reduction, therefore control were calculated with computing module Power ratio increases.Control at this time adjusts laser temperature with computing module control TEC (for example, the first above-mentioned TEC), makes function Rate ratio returns to Ratio_Ref, then wavelength of transmitted light returns to λT, wherein increase the temperature of laser, can to emit light Wavelength is elongated.
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon transmits transmitting light at etalon Increasing, reflection reduces, and corresponding two power Ps 1 reduce, and P2 increases, and control reduces with the power ratio that computing module is calculated, Control adjusts laser temperature with computing module control TEC, so that ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT, In, laser temperature is reduced, the wavelength for emitting light can be made to shorten.
When should be noted that in this way, light wavelength lambda is receivedRCorresponding transmissivity increases at etalon, Reception light has more optical powers and is transmitted into Tx by etalon, it is therefore desirable to isolator be added in laser front end.
Negative slope locking:
As shown in figure 9, standard transmission peak wavelength λTIt is directed at the position of etalon transmittance graph decline, at this time transmittance graph Slope is negative value.When emitting light transmission etalon, a part of light transmission, another part light is reflected, and reflected light is connect by PD1 It receives, measures optical power P1, which enters calculating and control module.
5% transmitted light is reflected into PD2 and received by transmitted light using one 95/5 transflection injection device, 95% Light enters AWG.PD2 measures optical power P2, which enters calculating and control module.
When emitting light is nominal wavelength, the ratio R atio_Ref=P1/ that two power is calculated with control module is calculated P2, this is reference value.If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light in etalon Locate to transmit what increase, reflection reduction, corresponding two power Ps 1 reduction, P2 increase, therefore control were calculated with computing module Power ratio reduction, at this time control and computing module control TEC (corresponding to the first above-mentioned TEC, in the specific embodiment 1, TEC can correspond to the first above-mentioned TEC) laser temperature is adjusted, so that power ratio is returned to Ratio_Ref, emits light wave Length returns to λT。
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon transmits transmitting light at etalon Reducing, reflection increases, and corresponding two power Ps 1 increase, and P2 is reduced, and control increases with the power ratio that computing module is calculated, Control adjusts laser temperature with computing module control TEC, so that ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
When should be noted that in this way, light wavelength lambda is receivedRCorresponding transmissivity increases at etalon, Reception light has more optical powers and is transmitted into Tx by etalon, it is therefore desirable to isolator be added in laser front end.
Extreme value locking:
As shown in Figure 10, standard transmission peak wavelength λTIt is directed at the position on etalon transmittance graph vertex, transmissivity is bent at this time Line slope is zero.When emitting light transmission etalon, most light transmissions, small part light is reflected, and reflected light passes through PD1 It receives, measures optical power P1, which enters calculating and control module.
5% transmitted light is reflected into PD2 and received by transmitted light using one 95/5 transflection injection device, 95% Light enters AWG.PD2 measures optical power P2, which enters calculating and control module.
When emitting light is nominal wavelength, the ratio R atio_Ref=P1/ that two power is calculated with control module is calculated P2, this is reference value, this value is almost nil.If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon Transmitting light is set to transmit reduction at etalon, reflection increases, and corresponding two power Ps 1 increase, and P2 reduces, therefore control and meter The power ratio that module is calculated is calculated to increase.
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon reduces transmitting light transmission still, Reflection still increases, and corresponding two power Ps 1 increase, and P2 is reduced, and controls the power ratio being calculated with computing module and increases, Two kinds of wave length shifts correspond to power ratio increase, therefore control and need to control TEC with computing module, adjust laser temperature, Different temperature adjustment directions is attempted, real-time measurement power ratio finds the minimum value of power ratio, as standard emission wave It is long.
Other than the wavelength locking scheme that Fig. 7 is provided, according to the structure of Fig. 3, following wavelength locking out can also be changed Scheme, principle is same as described above, is all by measuring the ratio of two optical powers come wavelength locking, only structure is different.
Figure 11 (corresponding to above-mentioned situation 2) between PD2 measurement etalon and laser the difference from Fig. 7 is that divide 5% light out, if laser power is constant, the power P 2 of PD2 measurement is constant.Still there are three types of lockings for this scheme Mode:
Positive slope locking:
As shown in figure 8, standard transmission peak wavelength λTIt is directed at the position that etalon transmittance graph rises, at this time transmittance graph Slope is positive value.Transmitted light first passes through one 95/5 transflection injection device, and 5% transmitted light is reflected into PD2 and is received, measurement Optical power is P2, and 95% light enters etalon.
When emitting light transmission etalon, a part of light transmission, another part light is reflected, and reflected light is received by PD1, Measure optical power P1.P1 and P2 electric signal enters calculating and control module.Calculate the ratio that two power is calculated with control module Ratio_Ref=P1/P2, this is reference value.If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes Emitting light transmission reduces, and reflection increases, and corresponding P1 increases, and since P2 is basically unchanged, control is calculated with computing module Power ratio increase, at this time control with computing module control TEC adjust laser temperature, so that power ratio is returned to Ratio_ Ref, wavelength of transmitted light return to λT。
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon makes to emit light transmission increase, reflection It reducing, corresponding P1 is reduced, and P2 is basically unchanged, and it controls the power ratio being calculated with computing module and reduces, control and calculating mould Block controls TEC and adjusts laser temperature, so that ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
When should be noted that in this way, light wavelength lambda is receivedRCorresponding transmissivity increases at etalon, Reception light has more optical powers and is transmitted into Tx by etalon, it is therefore desirable to isolator be added in laser front end.
Negative slope locking:
As shown in figure 9, standard transmission peak wavelength λTIt is directed at the position of etalon transmittance graph decline, at this time transmittance graph Slope is negative value.Transmitted light first passes through one 95/5 transflection injection device, and 5% transmitted light is reflected into PD2 and is received, measurement Optical power is P2, and 95% light enters etalon.
When emitting light transmission etalon, a part of light transmission, another part light is reflected, and reflected light is received by PD1, Measure optical power P1.P1 and P2 electric signal enters calculating and control module.Calculate the ratio that two power is calculated with control module Ratio_Ref=P1/P2, this is reference value.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light transmission increase, reflection It reduces, corresponding P1 reduces, therefore controls the power ratio being calculated with computing module and reduce, control at this time and computing module control TEC processed adjusts laser temperature, so that power ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon makes to emit light transmission reduction, reflection Increase, corresponding P1 increases, and control increases with the power ratio that computing module is calculated, and control controls TEC tune with computing module Laser temperature is saved, so that ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
When should be noted that in this way, light wavelength lambda is receivedRCorresponding transmissivity increases at etalon, Reception light has more optical powers and is transmitted into Tx by etalon, it is therefore desirable to isolator be added in laser front end.
Extreme value locking:
As shown in Figure 10, standard transmission peak wavelength λTIt is directed at the position on etalon transmittance graph vertex, transmissivity is bent at this time Line slope is zero.Transmitted light first passes through one 95/5 transflection injection device, and 5% transmitted light is reflected into PD2 and is received, measurement Optical power is P2, and 95% light enters etalon.
When emitting light transmission etalon, most light transmissions, small part light is reflected, and reflected light is connect by PD1 It receives, measures optical power P1, P1 and P2 electric signal enters calculating and control module.Calculate the ratio that two power is calculated with control module Value Ratio_Ref=P1/P2, this is reference value, this value is almost nil.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light transmission reduction, reflection Increase, corresponding P1 increases, therefore controls the power ratio being calculated with computing module and increase；If wavelength of transmitted light is to long wavelength Place's drift, such as drift are λ "T, then etalon reduces transmitting light transmission still, reflection or increase, corresponding P1 increase, control Increase with the power ratio that computing module is calculated.Two kinds of wave length shifts correspond to power ratio increase, therefore control and count It calculates module and needs to control TEC, adjust laser temperature, attempt different temperature adjustment directions, real-time measurement power ratio is found The minimum value of power ratio, as standard emission wavelength.
Figure 12 (corresponding to above-mentioned situation 3) between PD2 measurement etalon and laser the difference from Fig. 7 is that divide 5% light out, if laser power is constant, the power of PD2 measurement is constant, PD1 measurement transmitting light transmission etalon 5% light separated later by optical splitter.Still there are three types of lock modes for this scheme:
Positive slope locking:
As shown in figure 8, standard transmission peak wavelength λTIt is directed at the position that etalon transmittance graph rises, at this time transmittance graph Slope is positive value.Transmitted light first passes through one 95/5 transflection injection device, and 5% transmitted light is reflected into PD2 and is received, measurement Optical power is P2, and 95% light enters etalon.
When emitting light transmission etalon, a part of light transmission, another part light is reflected, and transmitted light separates 5% and passes through PD1 is received, and measures optical power P1.P1 and P2 electric signal enters calculating and control module.It calculates and control module calculates two function The ratio R atio_Ref=P1/P2 of rate, this is reference value.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light transmission reduction, reflection Increase, corresponding P1 is reduced, therefore control is reduced with the power ratio that computing module is calculated, control at this time and computing module control TEC processed adjusts laser temperature, so that power ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon makes to emit light transmission increase, reflection It reduces, corresponding P1 increases, and control increases with the power ratio that computing module is calculated, and control controls TEC tune with computing module Laser temperature is saved, so that ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
When should be noted that in this way, light wavelength lambda is receivedRCorresponding transmissivity increases, and receives light and has More optical powers are transmitted into Tx by etalon, it is therefore desirable to isolator be added in laser front end.
Negative slope locking:
As shown in figure 9, standard transmission peak wavelength λTIt is directed at the position of etalon transmittance graph decline, at this time transmittance graph Slope is negative value.Transmitted light first passes through one 95/5 transflection injection device, and 5% transmitted light is reflected into PD2 and is received, measurement Optical power is P2, and 95% light enters etalon.
When emitting light transmission etalon, a part of light transmission, another part light is reflected, and transmitted light separates 5% and passes through PD1 is received, and measures optical power P1.P1 and P2 electric signal enters calculating and control module.It calculates and control module calculates two function The ratio R atio_Ref=P1/P2 of rate, this is reference value.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light transmission increase, reflection It reduces, corresponding P1 increases, therefore controls the power ratio being calculated with computing module and increase, control at this time and computing module control TEC processed adjusts laser temperature, so that power ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon makes to emit light transmission reduction, reflection Increase, corresponding P1 reduces, and control reduces with the power ratio that computing module is calculated, and control controls TEC tune with computing module Laser temperature is saved, so that ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
When should be noted that in this way, light wavelength lambda is receivedRCorresponding transmissivity increases, and receives light and has More optical powers are transmitted into Tx by etalon, it is therefore desirable to isolator be added in laser front end.
Extreme value locking:
As shown in Figure 10, standard transmission peak wavelength λTIt is directed at the position on etalon transmittance graph vertex, transmissivity is bent at this time Line slope is zero.Transmitted light first passes through one 95/5 transflection injection device, and 5% transmitted light is reflected into PD2 and is received, measurement Optical power is P2, and 95% light enters etalon.
When emitting light transmission etalon, most light transmissions, small part light is reflected, and it is logical that transmitted light separates 5% PD1 reception is crossed, optical power P1 is measured, P1 and P2 electric signal enters calculating and control module.It calculates and control module calculates two The ratio R atio_Ref=P1/P2 of power, this is reference value.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light transmission reduction, reflection Increase, corresponding P1 is reduced, therefore control is reduced with the power ratio that computing module is calculated；If wavelength of transmitted light is to long wavelength Place's drift, such as drift are λ "T, then etalon reduces transmitting light transmission still, and reflection increase, corresponding P1 is reduced, and controls and counts Calculating the power ratio that module is calculated reduces, and two kinds of wave length shifts correspond to power ratio reduction, therefore controls and calculate mould Block needs to control TEC, adjusts laser temperature, attempts different temperature adjustment directions, real-time measurement power ratio finds power The maximum value of ratio, as standard emission wavelength.
Continuous wave laser light after signal modulation is added can generate frequency chirp, and the effect that chirp generates is modulated signal Wavelength blue shift when " 1 ", and red shift of wavelength when modulated signal " 0 " are therefore acted on using the period optical filter of etalon, can be with Shaping is carried out to spectrum, chirp management is carried out to signal light.Long wavelength's component that signal is filtered out using etalon, can be improved letter Number extinction ratio, change pulse before and after edge frequency distribution, enhance the resisting chromatic dispersion ability of signal.
As shown in figure 13, spectrum is one relatively narrow unimodal before optical signal modulation, due to chirp spectrum exhibition after ovennodulation There are two peaks in width, wherein the peak of " 1 " corresponding blue shift, the peak of " 0 " corresponding red shift, in spectrum it can be seen from " 1 " it is corresponding Greatly, the ratio of the two is extinction ratio to power ratio " 0 ".By signal after light spectrum reshaping, " 0 " corresponding peak is suppressed, entire light Spectrum narrows, and is conducive to long distance transmission, and signal " 0 " power is lowered, and is increased the extinction ratio of signal, is conducive to signal and connects It receives.
By reasonably selecting the parameter and incident light angle of etalon, effect as shown in figure 14 can achieve.Light letter The corresponding wavelength energy of signal " 1 " is in the transmission window of etalon after number modulation, and " 0 " corresponding wavelength energy then exists In the reflection windows of etalon.Emit light after etalon, " 0 " corresponding wavelength energy transmission is suppressed, optical signal transmissive Spectrum narrows, and long distance transmission dispersion reduces, and extinction ratio increases, and is conducive to receive.
Embodiment above-mentioned is that the light for the transmitter transmitting being directed to is passed using the transmission window that the light standard has What the case where defeated, and the received light of receiver is transmitted using the reflection windows that the light standard has, was illustrated, below The received light of receiver is transmitted using the transmission window that light standard has, and the light of transmitter transmitting utilizes the light The case where reflection windows of etalon are transmitted is illustrated:
In an alternative embodiment, when the received light of receiver is passed using the transmission window that light standard has It is defeated, and the light of transmitter transmitting, when being transmitted using the reflection windows that light standard has, optical transceiver module further includes third light Detector, the 4th optical detector and second controller, wherein the third optical detector is located at the transmission path of third reflection light On, for detecting the power of third reflection light, wherein the third reflection light is that transmitter emits and passes through third transflection The light of injection device reflection；4th optical detector is located in the transmission path of transflector light, penetrates light for detecting to return Power, wherein it is light transmitter transmitting and by light standard tool transmission that this, which returns thoroughly and penetrates light, or is emitted for transmitter And by the 4th transflection injection device reflection light；Second controller is connected to third optical detector and the 4th optical detector, Second controller is used for the light of the transmitting of the power regulation transmitter of the power and transflector light according to third reflection light Wavelength.In the present embodiment, the type of third transflection injection device and the 4th transflection injection device can there are many, for example, can be with Utilize 95/5 transflection injection device.Through this embodiment, the wavelength locking of the light emitted transmitter may be implemented.
In an alternative embodiment, above-mentioned second controller is used for the temperature by adjusting transmitter to adjust transmitting The wavelength of the light of device transmitting.It should be noted that controller adjust transmitter temperature mode can there are many, for example, Semiconductor cooler (Thermo Electric Cooler, referred to as TEC) be can use to adjust the temperature of transmitter, at this In embodiment, above-mentioned optical transceiver module further includes semiconductor cooler TEC, wherein the TEC is used for the control in second controller The lower temperature for adjusting transmitter.
In an alternative embodiment, transmitter, light standard tool, third transflection injection device and the 4th transflection injection device Between positional relationship there are many, under different positional relationships, third reflection light be can be different, transflector light It can be different, different positional relationships and corresponding third reflection light and transflector light are illustrated below:
Situation 4: when above-mentioned light standard tool is between transmitter and third transflection injection device, above-mentioned third reflection light For transmitter transmitting and first pass through light standard tool reflection after using the first transflection injection device reflection after light, above-mentioned transflection Penetrating light is light transmitter transmitting and by light standard tool transmission；And/or
Situation 5: when above-mentioned third transflection injection device is located between transmitter and light standard tool, above-mentioned third reflection light For transmitter transmitting and by third transflection injection device reflection after light, above-mentioned transflector light be transmitter transmitting and After first passing through the transmission of third transflection injection device, using the light after light standard tool transmission；And/or
Situation 6: between above-mentioned first transflection injection device is located at transmitter and light standard has, and, light standard tool is located at When between third transflection injection device and the 4th transflection injection device, above-mentioned third reflection light is that transmitter emits and passes through Light after the reflection of third transflection injection device, above-mentioned transflector light are that transmitter emits and first pass through third transflection injection device After transmission, after light standard tool reflection, using the light after the reflection of the 4th transflection injection device.
Below by taking optical transceiver module is BOSA as an example, the wavelength locking processing under above-mentioned different positional relationship is said It is bright:
Specific embodiment 2
Emitting light using inclination etalon separation inside BOSA and receives light, transmitting light utilizes the reflection windows of etalon, Receive the transmission window that light utilizes etalon.Wavelength locking and chirp management function are realized by the way that some modules and design are added.
As shown in figure 15, inside a BOSA, Tx is emitter, and Rx is reception device, and etalon is placed on Tx and Rx Between some position, theoretically the inclination angle of etalon can be 0 ° to 90 ° any one degree, but inclination angle is too small Etalon and Tx or Rx be will cause apart from excessive, be unfavorable for minimizing, therefore be typically chosen 45 ° of inclination, Tx and Rx and etalon Rectangular triangle.Also other angles be can choose, at this moment Tx, the relative position of Rx and etalon change, transmitance letter Number is also opposite to change, constant if necessary to transmittance function, then needs to change the parameter of etalon.In short, by suitable Ground selects the parameter and Tx relatively of etalon, and the position of Rx can achieve the effect of Fig. 6, only at this point, solid line is anti-in Fig. 6 Rate is penetrated, dotted line is transmissivity.
Wavelength of transmitted light λTPositioned at the maximum position of reflectivity, and transmissivity is minimum at this time, therefore it is exhausted to emit light in Figure 15 Major part can be reflected into AWG by etalon.Receive light wavelength lambdaRPositioned at the maximum position of transmissivity, and reflectivity at this time Minimum, therefore the reception light overwhelming majority in Figure 15 can transmit etalon and enter Rx, the light reflected by etalon is seldom, no Tx can be impacted.
The corresponding wavelength of each maximum value of reflectivity can be launch wavelength in Fig. 6, and corresponding each transmissivity is most Big position can receive wavelength, and launch wavelength and the frequency interval received between wavelength are Δ f/2, two launch wavelengths Or two reception wavelength, i.e., the frequency interval of two interchannels is Δ f, this is the frequency interval of each port AWG.Have in this way There is the etalon of Fig. 6 property, can be applied to the corresponding optical transceiver module in each channel AWG, transmitting light can be separated well With reception light.
WDM PON uses dense wave division multipurpose, and the wavelength in each channel needs to stablize to occur big in a certain range Drift, otherwise can interfere other channels.Therefore it needs that wavelength locking function is added on emitter, makes laser that wavelength occur It being capable of timely correction when drift.The structure of Figure 15 is increased to certain device and module, the wavelength of BOSA transmitting light may be implemented Locking.
Figure 16 (corresponding to above-mentioned situation 4) is a kind of wavelength locker realized using Figure 15 structure, uses two Optical detector PD1 (in specific embodiment 2, PD1 corresponds to the 4th above-mentioned transflection injection device) and PD2 are (in specific embodiment 2 In, PD2 corresponds to above-mentioned third transflection injection device), wave is determined using the ratio of the optical power of two optical detectors detection It is long to drift about and adjust launch wavelength to realize wavelength locking.Purpose using two optical detectors is to eliminate the function of laser itself Rate, which fluctuates bring, to be influenced.In suc scheme, for emitting light, etalon transmittance graph and anti-in Fig. 8, Fig. 9 and Figure 10 The exchange of rate curve is penetrated, i.e. solid line is reflectance curve, and dotted line is transmittance graph.Three kinds of wavelength locking modes may be implemented, just Slope locking, negative slope locking and extreme value locking (locking of zero slope).
Positive slope locking:
As shown in figure 8, standard transmission peak wavelength λTIt is directed at the position that etalon reflectance curve rises, at this time reflectance curve Slope is positive value.When emitting light incidence etalon, a part of light transmission, another part light is reflected, and transmitted light is connect by PD1 It receives, measures optical power P1, reflected light passes through one 95/5 transflection injection device, and 5% reflected light back is entered into PD2 and is received, Measurement optical power is P2, and 95% light enters AWG.P1 and P2 electric signal enters calculating and control module.Calculating and control module The ratio R atio_Ref=P1/P2 of two power is calculated, this is reference value.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light reflection reduction, transmission Increase, corresponding P1 increases P2 and reduces, therefore control increases with the power ratio that computing module is calculated, control at this time and calculating Module controls TEC and adjusts laser temperature, so that power ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon makes to emit light reflection increase, transmission It reduces, corresponding P1 reduces P2 and increases, and control reduces with the power ratio that computing module is calculated, and control is controlled with computing module TEC adjusts laser temperature, so that ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
When should be noted that in this way, receives light wavelength lambda R corresponding reflectivity at etalon and increases, Reception light has more optical powers and is reflected into Tx by etalon, it is therefore desirable to isolator be added in laser front end.
Negative slope locking:
As shown in figure 9, standard transmission peak wavelength λTIt is directed at the position of etalon reflectance curve decline, at this time reflectance curve Slope is negative value.When emitting light incidence etalon, a part of light transmission, another part light is reflected, and transmitted light is connect by PD1 It receives, measures optical power P1, reflected light passes through one 95/5 transflection injection device, and 5% transmitted light is reflected into PD2 and is received, Measurement optical power is P2, and 95% light enters AWG.P1 and P2 electric signal enters calculating and control module.Calculating and control module The ratio R atio_Ref=P1/P2 of two power is calculated, this is reference value.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light reflection increase, transmission It reduces, corresponding P1 reduces P2 and increases, therefore control reduces with the power ratio that computing module is calculated, control at this time and calculating Module controls TEC and adjusts laser temperature, so that power ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon makes to emit light reflection reduction, transmission Increase, corresponding P1 increases P2 and reduces, and control increases with the power ratio that computing module is calculated, and control is controlled with computing module TEC adjusts laser temperature, so that ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
When should be noted that in this way, light wavelength lambda is receivedRCorresponding reflectivity increases at etalon, Reception light has more optical powers and is reflected into Tx by etalon, it is therefore desirable to isolator be added in laser front end.
Extreme value locking:
As shown in Figure 10, standard transmission peak wavelength λTIt is directed at the position on etalon reflectance curve vertex, reflectivity is bent at this time Line slope is zero.When emitting light transmission etalon, most light reflections, small part light is transmitted, and transmitted light passes through PD1 It receives, measures optical power P1, reflected light first passes through one 95/5 transflection injection device, 5% transmitted light is reflected into PD2 and is connect It receives, measurement optical power is P2, and 95% light enters AWG.P1 and P2 electric signal enters calculating and control module.Calculate and control mould Block calculates the ratio R atio_Ref=P1/P2 of two power, this is reference value, this value is almost nil.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light reflection reduction, transmission Increase, corresponding P1 increases P2 and reduces, therefore controls the power ratio being calculated with computing module and increase；If wavelength of transmitted light to The drift of long wave strong point, such as drift are λ "T, then etalon makes to emit light reflection or reduces, transmit or increase, and corresponding P1 increases P2 reduces, and control increases with the power ratio that computing module is calculated, and two kinds of wave length shifts correspond to power ratio increase, because This control needs to control TEC with computing module, adjusts laser temperature, attempts different temperature adjustment directions, real-time measurement function Rate ratio finds the minimum value of power ratio, as standard emission wavelength.
Figure 17 (corresponding to above-mentioned situation 5) and Figure 16 is the difference is that between PD2 measurement etalon and laser 5% light branched away, if laser power is constant, the power of PD2 measurement is constant.In suc scheme, for transmitting Etalon transmittance graph and reflectance curve exchange in light, Fig. 8, Fig. 9 and Figure 10, i.e., red solid line is reflectance curve, blue Color dotted line is transmittance graph.Three kinds of wavelength locking modes:
Positive slope locking:
As shown in figure 8, standard transmission peak wavelength λTIt is directed at the position that etalon reflectance curve rises, at this time reflectance curve Slope is positive value.The light that the transflection injection device that transmitting light first passes through one 95/5 separates 5% is received to PD2, and measurement optical power is P2, if transmitter power is constant, P2 is constant.
Then emitting light transmission etalon, a part of light transmission, another part light is reflected, and transmitted light is received by PD1, Optical power P1 is measured, reflected light enters AWG.P1 and P2 electric signal enters calculating and control module.It calculates and control module calculates The ratio R atio_Ref=P1/P2 of two power, this is reference value.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light reflection reduction, transmission Increase, corresponding P1 increases, therefore controls the power ratio being calculated with computing module and increase, control at this time and computing module control TEC processed adjusts laser temperature, so that power ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon makes to emit light reflection increase, transmission It reduces, corresponding P1 is reduced, and control reduces with the power ratio that computing module is calculated, and control controls TEC tune with computing module Laser temperature is saved, so that ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
When should be noted that in this way, light wavelength lambda is receivedRCorresponding reflectivity increases at etalon, Reception light has more optical powers and is reflected into Tx by etalon, it is therefore desirable to isolator be added in laser front end.
Negative slope locking:
As shown in figure 9, standard transmission peak wavelength λTIt is directed at the position of etalon reflectance curve decline, at this time reflectance curve Slope is negative value.The light that the transflection injection device that transmitting light first passes through one 95/5 separates 5% is received to PD2, and measurement optical power is P2, if transmitter power is constant, P2 is constant.Then transmitting light transmission etalon, a part of light transmission, another part light are anti- It penetrates, transmitted light is received by PD1, measures optical power P1, and reflected light enters AWG.P1 and P2 electric signal enters calculating and control mould Block.The ratio R atio_Ref=P1/P2 that two power is calculated with control module is calculated, this is reference value.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light reflection increase, transmission It reduces, corresponding P1 reduces, therefore controls the power ratio being calculated with computing module and reduce, control at this time and computing module control TEC processed adjusts laser temperature, so that power ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon makes to emit light reflection reduction, transmission Increase, corresponding P1 increases, and control increases with the power ratio that computing module is calculated, and control controls TEC tune with computing module Laser temperature is saved, so that ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
When should be noted that in this way, light wavelength lambda is receivedRCorresponding reflectivity increases at etalon, Reception light has more optical powers and is reflected into Tx by etalon, it is therefore desirable to isolator be added in laser front end.
Extreme value locking:
As shown in Figure 10, standard transmission peak wavelength λTIt is directed at the position on etalon reflectance curve vertex, reflectivity is bent at this time Line slope is zero.The light that the transflection injection device that transmitting light first passes through one 95/5 separates 5% is received to PD2, and measurement optical power is P2, if transmitter power is constant, P2 is constant.Then emit light transmission etalon, most light reflections, small part light quilt Transmission, transmitted light are received by PD1, measure optical power P1, and reflected light enters AWG.P1 and P2 electric signal enters calculating and control Module.The ratio R atio_Ref=P1/P2 that two power is calculated with control module is calculated, this is reference value, this value is almost Zero.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light reflection reduction, transmission Increase, corresponding P1 increases, therefore controls the power ratio being calculated with computing module and increase；If wavelength of transmitted light is to long wavelength Place's drift, such as drift are λ "T, then etalon makes to emit light reflection or reduce, and transmission increases, and corresponding P1 increases, control and meter It calculates the power ratio that module is calculated to increase, two kinds of wave length shifts correspond to power ratio increase, therefore control and calculate mould Block needs to control TEC, adjusts laser temperature, attempts different temperature adjustment directions, real-time measurement power ratio finds power The minimum value of ratio, as standard emission wavelength.
Figure 18 (corresponding to above-mentioned situation 6) and Figure 16 is the difference is that between PD2 measurement etalon and laser 5% light branched away, if laser power is constant, the power of PD2 measurement is constant, and PD1 measurement transmitting light is by etalon 5% light separated after reflection by optical splitter.In suc scheme for emitting light, etalon is saturating in Fig. 8, Fig. 9 and Figure 10 It penetrates rate curve and reflectance curve exchanges, i.e., solid line is reflectance curve, and dotted line is transmittance graph.Three kinds of wavelength locking sides Formula:
Positive slope locking:
As shown in figure 8, standard transmission peak wavelength λTIt is directed at the position that etalon reflectance curve rises, at this time reflectance curve Slope is positive value.Transmitting light first passes through one 95/5 transflection injection device, and 5% the reflection of generation incident light is entered PD2 and is received, measurement Optical power is P2, and 95% light enters etalon.When emitting light incidence etalon, a part of light transmission, another part light quilt Reflection, reflected light separate 5% and are received by PD1, measure optical power P1.P1 and P2 electric signal enters calculating and control module.Meter The ratio R atio_Ref=P1/P2 that two power is calculated with control module is calculated, this is reference value.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light reflection reduction, transmission Increase, corresponding P1 is reduced, therefore control is reduced with the power ratio that computing module is calculated, control at this time and computing module control TEC processed adjusts laser temperature, so that power ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon makes to emit light reflection increase, transmission It reduces, corresponding P1 increases, and control increases with the power ratio that computing module is calculated, and control controls TEC tune with computing module Laser temperature is saved, so that ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
When should be noted that in this way, light wavelength lambda is receivedRCorresponding reflectivity increases at etalon, Reception light has more optical powers and is reflected into Tx by etalon, it is therefore desirable to isolator be added in laser front end.
Negative slope locking:
As shown in figure 9, standard transmission peak wavelength λTIt is directed at the position of etalon reflectance curve decline, at this time reflectance curve Slope is negative value.Transmitting light first passes through one 95/5 transflection injection device, and 5% the reflection of generation incident light is entered PD2 and is received, measurement Optical power is P2, and 95% light enters etalon.When emitting light transmission etalon, a part of light transmission, another part light quilt Reflection, reflected light separate 5% and are received by PD1, measure optical power P1.P1 and P2 electric signal enters calculating and control module.Meter The ratio R atio_Ref=P1/P2 that two power is calculated with control module is calculated, this is reference value.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light reflection increase, transmission It reduces, corresponding P1 increases, therefore controls the power ratio being calculated with computing module and increase, control at this time and computing module control TEC processed adjusts laser temperature, so that power ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
If wavelength of transmitted light drifts about to long wave strong point, such as drift is λ "T, then etalon makes to emit light reflection reduction, transmission Increase, corresponding P1 reduces, and control reduces with the power ratio that computing module is calculated, and control controls TEC tune with computing module Laser temperature is saved, so that ratio is returned to Ratio_Ref, wavelength of transmitted light returns to λT。
When should be noted that in this way, receives light wavelength lambda R corresponding reflectivity at etalon and increases, Reception light has more optical powers and is reflected into Tx by etalon, it is therefore desirable to isolator be added in laser front end.
Extreme value locking:
As shown in Figure 10, standard transmission peak wavelength λTIt is directed at the position on etalon reflectance curve vertex, reflectivity is bent at this time Line slope is zero.Transmitting light first passes through one 95/5 transflection injection device, and 5% the reflection of generation incident light is entered PD2 and is received, measurement Optical power is P2, and 95% light enters etalon.When emitting light transmission etalon, most light reflections, small part light It is transmitted, reflected light separates 5% and received by PD1, measures optical power P1, P1 and P2 electric signal enters calculating and control module. The ratio R atio_Ref=P1/P2 that two power is calculated with control module is calculated, this is reference value.
If wavelength of transmitted light drifts about to shortwave strong point, such as drift is λ 'T, then etalon makes to emit light reflection reduction, transmission Increase, corresponding P1 is reduced, therefore control is reduced with the power ratio that computing module is calculated；If wavelength of transmitted light is to long wavelength Place's drift, such as drift are λ "T, then etalon makes to emit light reflection or reduce, and transmission increases, and corresponding P1 is reduced, control and meter It calculates the power ratio that module is calculated to reduce, two kinds of wave length shifts correspond to power ratio reduction, therefore control and calculate mould Block needs to control TEC, adjusts laser temperature, attempts different temperature adjustment directions, real-time measurement power ratio finds power The maximum value of ratio, as standard emission wavelength.
Similar with the structure of Fig. 3, structure shown in figure 15 can also carry out chirp management, but at this point for Figure 14, it is close The corresponding not instead of transmissivity of the dashed curve of collection, reflectivity.The corresponding wavelength energy of signal " 1 " exists after optical signal modulation In the reflection windows of etalon, and " 0 " corresponding wavelength energy is then in the transmission window of etalon.Emit light and passes through etalon After reflection, " 0 " corresponding wavelength energy reflection is suppressed, and reflected light signal spectrum narrows, and long distance transmission dispersion reduces, delustring Than increasing, be conducive to receive.
In an alternative embodiment, above-mentioned optical transceiver module further includes isolator, wherein when transmitter and light standard When between tool without transflection injection device, which is located between transmitter and light standard tool, arrives for being isolated by light standard tool Up to the light on transmitter；Alternatively, isolator is located at transmitting when being provided with transflection injection device between transmitter and light standard tool Between device and transflection injection device, for the light passed through on transflection injection device arrival transmitter to be isolated.
In an alternative embodiment, the parameter of above-mentioned light standard tool is carried out in advance according at least one following information Setting: the type and the received light needs of optical receiver of the window for the light standard tool that the light that transmitter is sent needs to utilize The type of the window of the light standard tool utilized；The relative positional relationship of transmitter, receiver and light standard tool；Transmitter exists The frequency chirp generated after signal modulation is carried out.In the present embodiment, the parameter of light standard tool can be artificial by user Adjustment.
Embodiment 2
A kind of wavelength of light method of adjustment is provided in the present embodiment, and this method can be applied in above-described embodiment 1 In the optical transceiver module, Figure 19 is the flow chart of the first wavelength of light method of adjustment according to an embodiment of the present invention, such as Shown in Figure 19, when the light of transmitter transmitting is transmitted using the transmission window that light standard has, and the received light of receiver When being transmitted using the reflection windows that the light standard has, which includes the following steps:
Step S1902 obtains the power of the first reflection light detected, wherein first reflection light is transmitter Light emitting and by the reflection of the first transflection injection device；
Step S1904 obtains the power of the second transmitting light detected, wherein second reflection light is transmitter Light emitting and by light standard tool reflection, or be light that is that transmitter emits and passing through the reflection of the second transflection injection device Line；
Step S1906 is sent out according to the power of above-mentioned first reflection light and the power regulation transmitter of the second reflection light The wavelength for the light penetrated.
Wherein, execute aforesaid operations can be above-mentioned controller, such as calculating and control module shown in Figure 18.
Through the invention, be utilized in optical transceiver module the light standard light that is emitted of tool and received light (that is, Uplink and downlink light) separation, the close uplink and downlink in wavelength interval can be put into the isolated purpose of row by realizing, relative to related skill For art, half is at least reduced using the wavelength resource that light standard tool can make uplink and downlink light occupy, therefore, can solve phase The problem that uplink and downlink light present in the technology of pass needs the wavelength resource occupied excessive, reaching reduces the effect that wavelength resource occupies Fruit.
In an alternative embodiment, above-mentioned steps S1906 can adjust the light of transmitter transmitting in the following way The wavelength of line: according to the temperature of the power of the first reflection light and the power regulation transmitter of the second reflection light, to adjust hair The wavelength of the light of emitter transmitting.In the present embodiment, it can use TEC to adjust the temperature of transmitter.
A kind of wavelength of light method of adjustment is provided in the present embodiment, and this method can be applied in above-described embodiment 1 In the optical transceiver module, Figure 20 is the flow chart of second of wavelength of light method of adjustment according to an embodiment of the present invention, such as Shown in Figure 20, when the received light of above-mentioned receiver is transmitted using the transmission window that light standard has, and transmitter transmitting When light is transmitted using the reflection windows that light standard has, which includes the following steps:
Step S2002 obtains the power of the third reflection light detected, wherein the third reflection light is transmitter Light emitting and by the reflection of third transflection injection device；
Step S2004, obtain detect return the power for penetrating light thoroughly, wherein it is that transmitter emits that this, which returns thoroughly and penetrates light, And by light standard tool transmission light, or be transmitter transmitting and by the 4th transflection injection device reflection light；
Step S2006 emits according to the power regulation transmitter of the power of above-mentioned third reflection light and transflector light Light wavelength.
Wherein, execute aforesaid operations can be above-mentioned controller, such as calculating and control module shown in Figure 18.
Through the invention, be utilized in optical transceiver module the light standard light that is emitted of tool and received light (that is, Uplink and downlink light) separation, the close uplink and downlink in wavelength interval can be put into the isolated purpose of row by realizing, relative to related skill For art, half is at least reduced using the wavelength resource that light standard tool can make uplink and downlink light occupy, therefore, can solve phase The problem that uplink and downlink light present in the technology of pass needs the wavelength resource occupied excessive, reaching reduces the effect that wavelength resource occupies Fruit.
In an alternative embodiment, above-mentioned steps S2006 can adjust the light of transmitter transmitting in the following way The wavelength of line: according to the temperature of the power of third reflection light and the power regulation transmitter of transflector light, to adjust transmitting The wavelength of the light of device transmitting.In the present embodiment, it can use TEC to adjust the temperature of transmitter.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but it is very much In the case of the former be more preferably embodiment.Based on this understanding, technical solution of the present invention is substantially in other words to existing The part that technology contributes can be embodied in the form of software products, which is stored in a storage In medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, calculate Machine, server or network equipment etc.) execute method described in each embodiment of the present invention.
Embodiment 3
Additionally provide a kind of wavelength of light adjustment device in the present embodiment, the device is for realizing above-described embodiment and excellent Embodiment is selected, the descriptions that have already been made will not be repeated.As used below, predetermined function may be implemented in term " module " Software and/or hardware combination.Although device described in following embodiment is preferably realized with software, hardware, Or the realization of the combination of software and hardware is also that may and be contemplated.
Figure 21 is the structural block diagram of the first wavelength of light adjustment device according to an embodiment of the present invention, which can answer For in optical transceiver module shown in embodiment 1, as shown in figure 21, when the light of transmitter transmitting utilizes the saturating of light standard tool It penetrates window to be transmitted, and when the received light of receiver is transmitted using the reflection windows that light standard has, which includes:
First obtains module 212, for obtaining the power of the first reflection light detected, wherein first reflected light Line is light transmitter transmitting and by the reflection of the first transflection injection device；Second obtains module 214, detects for obtaining Second transmitting light power, wherein second reflection light be transmitter transmitting and by light standard tool reflection light Line, or be light transmitter transmitting and by the reflection of the second transflection injection device；First adjustment module 216, is connected to First stated obtains module 212 and second and obtains module 214, for the power and the second reflection light according to the first reflection light Power regulation transmitter transmitting light wavelength.
In an alternative embodiment, above-mentioned first adjustment module 216 includes: the first adjusting unit, for according to the The temperature of the power of one reflection light and the power regulation transmitter of the second reflection light, to adjust the light of transmitter transmitting Wavelength.
Figure 22 is the structural block diagram of second of wavelength of light adjustment device according to an embodiment of the present invention, which can answer For in optical transceiver module shown in embodiment 1, as shown in figure 22, when the received light of receiver utilizes the saturating of light standard tool It penetrates window to be transmitted, and the light of transmitter transmitting, when being transmitted using the reflection windows that light standard has, which includes:
Third obtains module 222, for obtaining the power of the third reflection light detected, wherein the third reflected light Line is light transmitter transmitting and by the reflection of third transflection injection device；4th obtains module 224, detects for obtaining Return the power for penetrating light thoroughly, wherein it is light transmitter transmitting and by light standard tool transmission that this, which returns thoroughly and penetrates light, or Person is light transmitter transmitting and by the reflection of the 4th transflection injection device；Second adjustment module 226 is connected to above-mentioned Three, which obtain module 222 and the 4th, obtains module 224, for according to the power of third reflection light and the power tune of transflector light Save the wavelength of the light of transmitter transmitting.
In an alternative embodiment, above-mentioned second adjustment module 226 includes: the second adjusting unit, for according to the The temperature of the power regulation transmitter of the power and transflector light of three reflection lights, to adjust the wave of the light of transmitter transmitting It is long.
Embodiment 4
In the present embodiment, a kind of Wave division multiplexing passive optical network is provided, including optical line terminal OLT, wavelength-division are multiple With device WDM, optical network unit ONU, wherein include one or more first optical modules in the OLT, which includes Optical transceiver module described in embodiment 1；WDM is connect with OLT；ONU is connect with WDM, and the quantity of the ONU is one or more, And one or more second optical modules are respectively included in each ONU, which includes the transmitting-receiving of light described in embodiment 1 Component.
As shown in figure 23, it is a kind of integrated etalon with the close uplink and downlink light in separation wavelength interval and there is wavelength lock Fixed, chirp management function optical module, the optical module include BOSA described in embodiment one, and Figure 23 shows only therein one Kind situation.Calculating and control module can be placed on inside BOSA, can also be placed on outside BOSA, inside optical module.This optical mode Block, which has the advantage that, can separate the close uplink and downlink light in wavelength interval, and realize the function of wavelength locking and chirp management simultaneously Can, without additional filter.
Be shown in Figure 24 using etalon realize operating wavelength range reduce WDM PON system, in Figure 24, OLT and Optical module used in ONU all has structure shown in Figure 23.The wave-length coverage that uplink and downlink wavelength occupies and the window corresponding to AWG Mouth is as shown in figure 25.Wherein, each port uplink and downlink wavelength of AWG the AWG same FSR period the same transmission window with It is interior, it is assumed here that uplink and downlink wavelength interval is Δ f/2, this is closely spaced, and general channel join-splitting device is difficult to be separated, and is used The optical module of embodiment three can be separated well.Between between the corresponding data feedback channel in each port AWG and down going channel It is divided into Δ f, i.e. channel spacing is Δ f.In this way, the band resource occupied in total is n Δ f, than reducing half shown in Fig. 2.
WDM PON system shown in Figure 24 may be implemented to reduce the function of operating wavelength range, but this is a kind of act Example, the WDM PON systems of other forms can also optical module or BOSA shown in application drawing 23 to realize reduction operating wavelength range Purpose.
Embodiment 5
It should be noted that module shown in embodiment 3 can be realized by software or hardware, for the latter, It can be accomplished by the following way, but not limited to this: above-mentioned module is respectively positioned in same processor；Alternatively, above-mentioned modules Form in any combination is located in different processors.
According to still another embodiment of the invention, a kind of storage medium is additionally provided, meter is stored in the storage medium Calculation machine program, wherein the computer program is arranged to execute the step in above-described embodiment 2 when operation.
Optionally, in the present embodiment, above-mentioned storage medium can include but is not limited to: USB flash disk, read-only memory (Read- Only Memory, referred to as ROM), it is random access memory (Random Access Memory, referred to as RAM), mobile hard The various media that can store computer program such as disk, magnetic or disk.
According to still another embodiment of the invention, a kind of electronic device, including memory and processor are additionally provided, it is described Computer program is stored in memory, the processor is arranged to run the computer program to execute above-described embodiment Step in 3.
Optionally, above-mentioned electronic device can also include transmission device and input-output equipment, wherein the transmission device It is connected with above-mentioned processor, which connects with above-mentioned processor.
Optionally, the specific example in the present embodiment can be with reference to described in above-described embodiment and optional embodiment Example, details are not described herein for the present embodiment.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.It is all within principle of the invention, it is made it is any modification, etc. With replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (23)

1. a kind of optical transceiver module characterized by comprising
Transmitter, for emitting light；
Receiver, for receiving light；
Light standard tool, between the transmitter and the receiver, for separating light and the institute of the transmitter transmitting State the received light of receiver.
2. optical transceiver module according to claim 1, which is characterized in that the transmitter, the receiver and the light Three vertex of etalon present position form right angle triangle, wherein light of the transmitter to light standard tool transmitting Line is the first straight flange of the right angled triangle, and it is the right angle three that the receiver, which has received light by the light standard, The center line of the second angular straight flange, the light standard tool is the bevel edge of the right angled triangle, and the center line is the light The center line of etalon along inclined direction.
3. optical transceiver module according to claim 1, which is characterized in that described in being utilized when the light of transmitter transmitting Light standard tool transmission window transmitted, and the received light of the receiver using the light standard tool reflection windows into When row transmission, the optical transceiver module further includes the first optical detector, the second optical detector and the first controller, wherein
First optical detector is located in the transmission path of the first reflection light, for detecting the power of the first reflection light, Wherein, first reflection light is light transmitter transmitting and by the reflection of the first transflection injection device；
Second optical detector is located in the transmission path of the second reflection light, for detecting the power of the second transmitting light, Wherein, second reflection light is light transmitter transmitting and by light standard tool reflection, or is institute State light transmitter transmitting and by the reflection of the second transflection injection device；
First controller is connected to first optical detector and second optical detector, and first controller is used for The light of the transmitting of the transmitter according to the power regulation of the power of first reflection light and second reflection light Wavelength.
4. optical transceiver module according to claim 3, which is characterized in that first controller is used for by described in adjusting The temperature of transmitter adjusts the wavelength of the light of transmitter transmitting.
5. optical transceiver module according to claim 4, which is characterized in that the optical transceiver module further includes the first semiconductor Refrigerator TEC, wherein the first TEC is used to adjust the temperature of the transmitter under the control of first controller.
6. optical transceiver module according to claim 3, which is characterized in that including at least one of:
When light standard tool is between the transmitter and the first transflection injection device, first reflection light is Transmitter transmitting and first pass through after the light standard tool refraction using the light after the first transflection injection device reflection Line, second reflection light are light transmitter transmitting and by light standard tool reflection；
When the first transflection injection device is located between the transmitter and light standard tool, first reflection light is Light that the transmitter emits and after the first transflection injection device reflection, second reflection light is the hair Emitter transmitting and after first passing through the first transflection injection device transmission, using the light after light standard tool reflection；
Between the first transflection injection device is located at the transmitter and the light standard has, and, the light standard tool is located at When between the first transflection injection device and the second transflection injection device, first reflection light is transmitter transmitting And by the first transflection injection device reflection after light, second reflection light be the transmitter transmitting and first After the first transflection injection device transmission, after light standard tool refraction, filled using second transflector Light after setting reflection.
7. optical transceiver module according to claim 1, which is characterized in that described in being utilized when the received light of the receiver Light standard tool transmission window transmitted, and the transmitter transmitting light using the light standard tool reflection windows into When row transmission, the optical transceiver module further includes third optical detector, the 4th optical detector and second controller, wherein
The third optical detector is located in the transmission path of third reflection light, for detecting the power of third reflection light, Wherein, the third reflection light is light transmitter transmitting and by the reflection of third transflection injection device；
4th optical detector is located in the transmission path of transflector light, returns the power for penetrating light for detecting, wherein Described return penetrates the light that light is that the transmitter emits and has transmission by the light standard, or is the transmitter Light emitting and by the reflection of the 4th transflection injection device；
The second controller is connected to the third optical detector and the 4th optical detector, and the second controller is used for The light of the transmitting of the transmitter according to the power regulation of the power of the third reflection light and the transflector light Wavelength.
8. optical transceiver module according to claim 7, which is characterized in that the second controller is used for by described in adjusting The temperature of transmitter adjusts the wavelength of the light of transmitter transmitting.
9. optical transceiver module according to claim 8, which is characterized in that the optical transceiver module further includes the second semiconductor Refrigerator TEC, wherein the 2nd TEC is used to adjust the temperature of the transmitter under the control of the second controller.
10. optical transceiver module according to claim 7, which is characterized in that including at least one of:
When light standard tool is between the transmitter and the third transflection injection device, the third reflection light is Transmitter transmitting and first pass through after the light standard tool reflection using the light after third transflection injection device reflection Line, the transflector light are light transmitter transmitting and by light standard tool transmission；
When the third transflection injection device is located between the transmitter and light standard tool, the third reflection light is Light that the transmitter emits and after third transflection injection device reflection, the transflector light is the transmitting Device transmitting and after first passing through third transflection injection device transmission, using the light after light standard tool transmission；
Between the third transflection injection device is located at the transmitter and the light standard has, and, the light standard tool is located at When between the third transflection injection device and the 4th transflection injection device, the third reflection light is transmitter transmitting And by the third transflection injection device reflection after light, the transflector light be the transmitter transmitting and first pass through After crossing the third transflection injection device transmission, after light standard tool reflection, using the 4th transflection injection device Light after reflection.
11. optical transceiver module according to claim 1, which is characterized in that the optical transceiver module further includes isolator, In,
When between the transmitter and light standard tool without transflection injection device, the isolator is located at the transmitter and institute It states between light standard tool, for the light reached on the transmitter by light standard tool to be isolated；Alternatively,
When being provided with transflection injection device between the transmitter and light standard tool, the isolator is located at the transmitter Between the transflection injection device, for the light reached on the transmitter by the transflection injection device to be isolated.
12. optical transceiver module according to claim 1, which is characterized in that the parameter of the light standard tool is according to as follows At least one information is predetermined:
The type of the window for the light standard tool that the light that the transmitter is sent needs to utilize and the receiver are received The type of the window for the light standard tool that light needs to utilize；
The relative positional relationship of the transmitter, the receiver and light standard tool；
The frequency chirp that the transmitter generates after having carried out signal modulation.
13. a kind of wavelength of light method of adjustment, which is characterized in that received applied to light described in any one of claims 1 to 12 It sends out in component, when the light of transmitter transmitting is transmitted using the transmission window that the light standard has, and the reception When the received light of device is transmitted using the reflection windows that the light standard has, which comprises
Obtain the power of the first reflection light detected, wherein first reflection light be transmitter transmitting and The light reflected by the first transflection injection device；
Obtain detect second transmitting light power, wherein second reflection light be the transmitter transmitting and It by the light of light standard tool reflection, or is light transmitter transmitting and by the reflection of the second transflection injection device Line；
The light of the transmitting of the transmitter according to the power regulation of the power of first reflection light and second reflection light The wavelength of line.
14. according to the method for claim 13, which is characterized in that according to the power of first reflection light and described the The wavelength of light of the transmitting of transmitter described in the power regulation of two reflection lights includes:
The temperature of the transmitter according to the power regulation of the power of first reflection light and second reflection light, with Adjust the wavelength of the light of the transmitter transmitting.
15. a kind of wavelength of light method of adjustment, which is characterized in that received applied to light described in any one of claims 1 to 12 It sends out in component, when the received light of the receiver is transmitted using the transmission window that the light standard has, and the transmitting When the light of device transmitting is transmitted using the reflection windows that the light standard has, which comprises
Obtain the power of third reflection light detected, wherein the third reflection light be transmitter transmitting and The light reflected by third transflection injection device；
What acquisition detected returns the power for penetrating light thoroughly, wherein described return is penetrated that light emits for the transmitter and passed through The light of the light standard tool transmission, or be light transmitter transmitting and by the reflection of the 4th transflection injection device；
The light of the transmitting of the transmitter according to the power regulation of the power of the third reflection light and the transflector light Wavelength.
16. according to the method for claim 15, which is characterized in that according to the power of the third reflection light and described The wavelength of light of the transmitting of transmitter described in the power regulation of reflection light includes:
The temperature of the transmitter according to the power regulation of the power of the third reflection light and the transflector light, to adjust Save the wavelength of the light of the transmitter transmitting.
17. a kind of wavelength of light adjusts device, which is characterized in that received applied to light described in any one of claims 1 to 12 It sends out in component, when the light of transmitter transmitting is transmitted using the transmission window that the light standard has, and the reception When the received light of device is transmitted using the reflection windows that the light standard has, described device includes:
First obtains module, for obtaining the power of the first reflection light detected, wherein first reflection light is institute State light transmitter transmitting and by the reflection of the first transflection injection device；
Second obtains module, for obtaining the power of the detect second transmitting light, wherein second reflection light is institute State transmitter transmitting and by the light standard tool reflection light, or for the transmitter transmitting and by second thoroughly The light of reflection unit reflection；
First adjustment module, for according to the power of first reflection light and the power regulation institute of second reflection light State the wavelength of the light of transmitter transmitting.
18. device according to claim 17, which is characterized in that first adjustment module includes:
First adjusts unit, for according to the power of first reflection light and the power regulation institute of second reflection light The temperature of transmitter is stated, to adjust the wavelength of the light of the transmitter transmitting.
19. a kind of wavelength of light adjusts device, which is characterized in that received applied to light described in any one of claims 1 to 12 It sends out in component, when the received light of the receiver is transmitted using the transmission window that the light standard has, and the transmitting When the light of device transmitting is transmitted using the reflection windows that the light standard has, described device includes:
Third obtains module, for obtaining the power of the third reflection light detected, wherein the third reflection light is institute State light transmitter transmitting and by the reflection of third transflection injection device；
4th obtains module, penetrates the power of light for obtaining returning thoroughly of detecting, wherein described return penetrates light as the hair Emitter transmitting and by the light standard tool transmission light, or for the transmitter transmitting and pass through the 4th transflector The light of device reflection；
Second adjustment module, for according to the power regulation of the power of the third reflection light and the transflector light The wavelength of the light of transmitter transmitting.
20. device according to claim 19, which is characterized in that second adjustment module includes:
Second adjusts unit, for according to the power regulation of the power of the third reflection light and the transflector light The temperature of transmitter, to adjust the wavelength of the light of the transmitter transmitting.
21. a kind of Wave division multiplexing passive optical network, which is characterized in that including optical line terminal OLT, wavelength division multiplexer WDM, light Fibre web network unit ONU, wherein
It include one or more first optical modules in the OLT, first optical module includes any one of claims 1 to 12 The optical transceiver module；
The WDM is connect with the OLT；
The ONU is connect with the WDM, and the quantity of the ONU is one or more, and respectively included in each ONU one or Multiple second optical modules, second optical module include optical transceiver module described in any one of claims 1 to 12.
22. a kind of storage medium, which is characterized in that be stored with computer program in the storage medium, wherein the computer Program is arranged to execute method described in the claim 13 or 14 when operation, or execute the claim 15 or Method described in 16.
23. a kind of electronic device, including memory and processor, which is characterized in that be stored with computer journey in the memory Sequence, the processor are arranged to run the computer program to execute method described in the claim 13 or 14, Or execute method described in the claim 15 or 16.
CN201810344446.4A 2018-04-17 2018-04-17 Light receiving and transmitting assembly, light wavelength adjusting method and device Active CN110391844B (en)

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