CN103916193B - The optical transceiver module that a kind of manipulator both arms can independently be modulated - Google Patents
The optical transceiver module that a kind of manipulator both arms can independently be modulated Download PDFInfo
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- CN103916193B CN103916193B CN201410102786.8A CN201410102786A CN103916193B CN 103916193 B CN103916193 B CN 103916193B CN 201410102786 A CN201410102786 A CN 201410102786A CN 103916193 B CN103916193 B CN 103916193B
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Abstract
The present invention discloses the optical transceiver module that a kind of manipulator both arms can independently be modulated, including laser instrument, drive circuit for laser, transmitting terminal optical assembly, receiving terminal optical assembly, modulator driver circuit, receiver circuit and microprocessor etc., wherein, described transmitting terminal optical assembly includes a Mach zehnder modulators, described modulator driver circuit includes first stage amplifier, and it is connected in parallel on 2 two-stage amplifiers of first stage amplifier outfan, the outfan of two-stage amplifier is connected with Mach zehnder modulators respectively, the modulation voltage that two drive sub-circuits are different is controlled by microprocessor, thus realize the different modulating degree of depth of Mach zehnder modulators left and right arms, realize transmitting more at a distance, it is substantially reduced the cost of optical transport；And due to modulator driver circuit and microprocessor communication, it is not necessary to increase the input of client's section and output, only need to increase the drive circuit of inside, and microprocessor communicates with the I2C of drive circuit, has good compatibility.
Description
Technical field
The present invention relates to the optical transceiver module that a kind of manipulator both arms can independently be modulated, belong to fiber-optic transfer field.
Background technology
The optical transceiver module based on the Mach zehnder modulators change by phase place, can realize intensity modulated and phase-modulation, warbles can be controlled by the splitting ratio of two arms and bias voltage due to it, can realize the transmission of relatively long distance.The most important role is played the part of in the backbone networks such as metropolitan area and ultra-long span transmission optical-fiber network.The manipulator of optical-fiber network high speed is all based on a Mach zehnder modulators improvement at present.
Mach zehnder modulators can pass through waveguide length and the beam splitting light ratio of two arms about regulation, it is achieved negative warbling is warbled with zero.But both arms are recommended modulation and are limited the performance of manipulator, intensity modulated optical transceiver module propagation distance the shortest (80km) in general fiber optic communication during the most usual used modulation.
In view of this, this is studied by the present inventor, develops the optical transceiver module that a kind of manipulator both arms can independently be modulated specially, and this case thus produces.
Summary of the invention
It is an object of the invention to provide a kind of optical transceiver module, use the Mach zehnder modulators that both arms can independently be modulated, solve the shortcoming of intensity modulated optical transceiver module propagation distance shorter (80km) in current fiber optic communication, realize transmission (160km) more at a distance by the modulation depth (i.e. modulation voltage) optimizing Mach zehnder modulators two-arm, thus be substantially reduced the cost of optical transport.
To achieve these goals, the solution of the present invention is:
The optical transceiver module that a kind of manipulator both arms can independently be modulated, including laser instrument, drive circuit for laser, transmitting terminal optical assembly, receiving terminal optical assembly, modulator driver circuit, receiver circuit and microprocessor etc., wherein, described transmitting terminal optical assembly includes a Mach zehnder modulators, described modulator driver circuit includes first stage amplifier, and it is connected in parallel on 2 two-stage amplifiers of first stage amplifier outfan, the outfan of two-stage amplifier is connected with Mach zehnder modulators respectively, and described modulator driver circuit farther includes voltage bias control circuit；Microprocessor is connected with receiver circuit, drive circuit for laser, the first stage amplifier of modulator driver circuit and two-stage amplifier respectively, microprocessor is connected with Mach zehnder modulators by voltage bias control circuit simultaneously, and microprocessor is mainly used in controlling the input/output signal of each circuit above-mentioned；Modulator driver circuit is connected with Mach zehnder modulators, drive circuit for laser is connected with laser instrument, drive circuit for laser regulates the output wavelength of laser instrument by controlling the electric current of input laser instrument, the continuous light that laser instrument sends is through Mach zehnder modulators, the signal of telecommunication needing transmission amplifies on the Mach zehnder modulators being loaded in transmitting terminal optical assembly by modulator driver circuit, the signal of telecommunication is transformed into optical signal, and it is transferred to receiving terminal optical assembly, after the optical signal received is converted into the signal of telecommunication by receiving terminal optical assembly, input extremely receives the input of the limiting amplifier in circuit, after the process of limiting amplifier, the output signal of telecommunication.
As preferably, said modulator drive circuit also includes the feedback circuit with the cross point of eye pattern of monitoring Mach zehnder modulators in real time, it is carried in low-frequency modulation signal on power monitoring detector by monitoring and judges cross point of eye pattern, by the voltage-regulation cross point of eye pattern of regulation Mach zehnder modulators left and right two-arm.
As preferably, the optical transceiver module that said modulator both arms can independently be modulated farther includes APC/ATC automated power circuit and the auto thermal compensation circuit being connected with Mach zehnder modulators, by the photoelectric current to detector monitors waveguide integrated in modulator waveguide, control Output optical power by SOA (semiconductor optical amplifier) electric current of regulation laser instrument；Temperature-compensating is to monitor temperature by the critesistor being integrated on laser instrument and modulator chip, controls temperature by the electric current of regulation semiconductor cooler (TEC), it is achieved luminous power the most dynamically controls and the online compensation of temperature.
As preferably, above-mentioned first stage amplifier employing model is the manipulator driving chip of KGL4195KD.RF signal respectively enters 2 two-stage amplifiers by first stage amplifier after being amplified.
As preferably, above-mentioned two-stage amplifier is low-noise amplifier, it is connected with Mach zehnder modulators left and right two-arm respectively, form 2 independent drive sub-circuits, the modulation voltage that two two-stage amplifiers are different is controlled by microprocessor, thus realize the different modulating degree of depth of Mach zehnder modulators left and right arms, optimize modulating performance.
The optical transceiver module operation principle that said modulator both arms can independently be modulated: first, drive circuit for laser regulates the output wavelength of laser instrument by controlling the electric current of input laser instrument, the signal needing transmission sent from laser instrument amplifies on the Mach zehnder modulators being loaded into transmitting terminal optical assembly by first stage amplifier and the two-stage amplifier of modulator driver circuit, it is achieved the conversion of the signal of telecommunication to optical signal.Simultaneously, APC/ATC automated power and auto compensatng circuit, realize luminous power the most dynamically to control and the online compensation of temperature, the feedback circuit with the cross point of eye pattern of monitoring manipulator in real time in this external modulator driver circuit, it is carried in low-frequency modulation signal on power monitoring detector by monitoring and judges cross point of eye pattern, by regulating the voltage-regulation cross point of eye pattern of manipulator two-arm.After the optical signal transmitted from Mach zehnder modulators is converted into the signal of telecommunication by receiving terminal optical assembly, input the input of the limiting amplifier to receiver circuit, after the process of limiting amplifier, export the signal of telecommunication, it is achieved long-distance transmissions.
The optical transceiver module that said modulator both arms can independently be modulated, the left and right two-arm of described Mach zehnder modulators has independent drive sub-circuits, the modulation voltage that two drive sub-circuits are different is controlled by microprocessor, thus realize the different modulating degree of depth of Mach zehnder modulators left and right arms, optimize modulating performance, realize transmitting more at a distance, can reach 160km even farthest, be substantially reduced the cost of optical transport；And due to modulator driver circuit and microprocessor communication, it is not necessary to increasing the input of client's section and output, only need to increase the drive circuit of inside, and microprocessor communicates with the I2C of drive circuit, has good compatibility, client is without additional designs.
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the optical transceiver module connection diagram of the present embodiment；
Fig. 2 is the modulator driver circuit connection diagram of the present embodiment；
Fig. 3 is the modulator driver circuit schematic diagram of the present embodiment.
Detailed description of the invention
As shown in Figure 1-2, the optical transceiver module that a kind of manipulator both arms can independently be modulated, including laser instrument 1, drive circuit for laser 2, transmitting terminal optical assembly 3, receiving terminal optical assembly 4, modulator driver circuit 7, receiver circuit 5 and microprocessor 6, wherein, described transmitting terminal optical assembly 3 includes Mach zehnder modulators 31, described receiving terminal optical assembly 4 includes preamplifier, described modulator driver circuit 7 includes first stage amplifier 71, and it is connected in parallel on left arm two-stage amplifier 72 and the right arm two-stage amplifier 73 of first stage amplifier 71 outfan, left arm two-stage amplifier 72 is connected with Mach zehnder modulators 31 respectively with the outfan of right arm two-stage amplifier 73, described modulator driver circuit farther includes voltage bias control circuit 74；Microprocessor 6 is connected with receiver circuit 5, drive circuit for laser 2, the first stage amplifier 71 of modulator driver circuit 7, left arm two-stage amplifier 72 and right arm two-stage amplifier 73 respectively, microprocessor 6 is connected with Mach zehnder modulators 31 by voltage bias control circuit 74 simultaneously, for controlling the input/output signal of each circuit above-mentioned；Modulator driver circuit 7 is connected with Mach zehnder modulators 31, and drive circuit for laser 2 is connected with laser instrument 1, and drive circuit for laser 2 regulates the output wavelength of laser instrument 1 by controlling the electric current of input laser instrument 1.
In the present embodiment, said modulator drive circuit 2 also includes the feedback circuit with the cross point of eye pattern of monitoring Mach zehnder modulators in real time, it is carried in low-frequency modulation signal on power monitoring detector by monitoring and judges cross point of eye pattern, by the voltage-regulation cross point of eye pattern of regulation Mach zehnder modulators left and right two-arm.
The optical transceiver module that said modulator both arms can independently be modulated farther includes APC/ATC automated power circuit and the auto thermal compensation circuit being connected with Mach zehnder modulators, by the photoelectric current to detector monitors waveguide integrated in the waveguide of conspicuous zehnder modulators 31, control Output optical power by SOA (semiconductor optical amplifier) electric current of regulation laser instrument.Temperature-compensating is to monitor temperature by the critesistor being integrated on laser instrument and modulator chip, controls temperature by the electric current of regulation semiconductor cooler (TEC), it is achieved luminous power the most dynamically controls and the online compensation of temperature.
As it is shown on figure 3, the manipulator driving chip that the first stage amplifier 71 of said modulator drive circuit 7 uses model to be KGL4195KD.RF signal respectively enters left arm two-stage amplifier 72 and right arm two-stage amplifier 73 after being amplified by first stage amplifier 71.Described two-stage amplifier is low-noise amplifier, is connected with Mach zehnder modulators left and right two-arm respectively, forms 2 independent drive sub-circuits.Modulator driver circuit 7 can by XP pin signal to signal crossing point 35% ~ 80% scope be adjusted.Controlled two-arm modulated signal amplitude (RF_out_N, RF_out_P) of first stage amplifier 71 output by Amp_ctrl pin signal, make Mach zehnder modulators 31 single armed peak-to-peak value export between 1.0 ~ 3.0V.Left arm two-stage amplifier 72 and the amplitude of right arm two-stage amplifier 73 is controlled respectively by VG_L and the VG_R signal of microprocessor 6, realize the modulated signal amplitude of left and right arms is individually controlled, input a signal into the left and right arms of Mach zehnder modulators 31 finally by AC coupled to realize both arms and independently modulate, finally realize the different modulating degree of depth of Mach zehnder modulators left and right arms, optimize modulating performance, it is achieved transmission (160km) more at a distance；And owing to modulator driver circuit 7 communicates with microprocessor 6, it is not necessary to increasing the input of client's section and output, only need to increase the drive circuit of inside, and microprocessor 6 communicates with the I2C of drive circuit, has good compatibility, client is without additional designs.
The optical transceiver module operation principle that said modulator both arms can independently be modulated: first, drive circuit for laser 2 regulates the output wavelength of laser instrument 1 by controlling the electric current of input laser instrument 1, the light sent from laser instrument 1 enters manipulator as DC light source, the signal needing transmission amplifies on the Mach zehnder modulators 31 being loaded in transmitting terminal optical assembly 3 by the first stage amplifier 71 of modulator driver circuit 7, left arm two-stage amplifier 72 and right arm two-stage amplifier 73, it is achieved the conversion of the signal of telecommunication to optical signal.Simultaneously, APC/ATC automated power circuit and auto thermal compensation circuit, realize luminous power the most dynamically to control and the online compensation of temperature, the feedback circuit with the cross point of eye pattern of monitoring manipulator in real time in this external modulator driver circuit 7, it is carried in low-frequency modulation signal on power monitoring detector by monitoring and judges cross point of eye pattern, by regulating the voltage-regulation cross point of eye pattern of manipulator two-arm.Microprocessor 6 controls left arm two-stage amplifier 72 and the amplitude of right arm two-stage amplifier 73 respectively, realize the different modulating degree of depth to Mach zehnder modulators 31 left and right arms, after the optical signal transmitted from Mach zehnder modulators 31 is converted into the signal of telecommunication by receiving terminal optical assembly 4, input the input of the limiting amplifier to receiver circuit 5, after the process of limiting amplifier, the output signal of telecommunication, it is achieved long-distance transmissions, can reach 160km the most farthest.
Above-described embodiment and the product form of the graphic and non-limiting present invention and style, suitably change that it is done by any person of an ordinary skill in the technical field or modify, all should be regarded as the patent category without departing from the present invention.
Claims (5)
1. the optical transceiver module that manipulator both arms can independently be modulated, it is characterized in that: include laser instrument, drive circuit for laser, transmitting terminal optical assembly, receiving terminal optical assembly, modulator driver circuit, receiver circuit and microprocessor, wherein, described transmitting terminal optical assembly includes a Mach zehnder modulators, described modulator driver circuit includes first stage amplifier, and it is connected in parallel on 2 two-stage amplifiers of first stage amplifier outfan, the outfan of two-stage amplifier is connected with Mach zehnder modulators respectively, described modulator driver circuit farther includes voltage bias control circuit；Microprocessor is connected with receiver circuit, drive circuit for laser, the first stage amplifier of modulator driver circuit and two-stage amplifier respectively, microprocessor is connected with Mach zehnder modulators by voltage bias control circuit simultaneously, and microprocessor is mainly used in controlling the input/output signal of each circuit above-mentioned；Modulator driver circuit is connected with Mach zehnder modulators, drive circuit for laser is connected with laser instrument, drive circuit for laser regulates the output wavelength of laser instrument by controlling the electric current of input laser instrument, the continuous light that laser instrument sends is through Mach zehnder modulators, the signal of telecommunication needing transmission amplifies on the Mach zehnder modulators being loaded in transmitting terminal optical assembly by modulator driver circuit, the signal of telecommunication is transformed into optical signal, and it is transferred to receiving terminal optical assembly, after the optical signal received is converted into the signal of telecommunication by receiving terminal optical assembly, input extremely receives the input of the limiting amplifier in circuit, after the process of limiting amplifier, the output signal of telecommunication.
The optical transceiver module that a kind of manipulator both arms the most as claimed in claim 1 can independently be modulated, it is characterised in that: said modulator drive circuit also includes the feedback circuit with the cross point of eye pattern of monitoring Mach zehnder modulators in real time.
The optical transceiver module that a kind of manipulator both arms the most as claimed in claim 1 can independently be modulated, it is characterized in that: the optical transceiver module that said modulator both arms can independently be modulated farther includes APC/ATC automated power circuit and the auto thermal compensation circuit being connected with Mach zehnder modulators, by the photoelectric current to detector monitors waveguide integrated in modulator waveguide, control Output optical power by the SOA electric current of regulation laser instrument；Temperature-compensating is to monitor temperature by the critesistor being integrated on laser instrument and modulator chip, controls temperature by the electric current of regulation semiconductor cooler, it is achieved luminous power the most dynamically controls and the online compensation of temperature.
The optical transceiver module that a kind of manipulator both arms the most as claimed in claim 1 can independently be modulated, it is characterised in that: the manipulator driving chip that above-mentioned first stage amplifier uses model to be KGL4195KD.
The optical transceiver module that a kind of manipulator both arms the most as claimed in claim 1 can independently be modulated, it is characterized in that: above-mentioned two-stage amplifier is low-noise amplifier, it is connected with Mach zehnder modulators left and right two-arm respectively, form 2 independent drive sub-circuits, control, by microprocessor, the modulation voltage that two two-stage amplifiers are different.
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| CN106330295B (en) * | 2015-07-08 | 2019-10-22 | 南京中兴软件有限责任公司 | A kind of electric eye adjustment method and device |
| CN111226401B (en) * | 2017-09-30 | 2022-02-18 | 华为技术有限公司 | Optical device, optical module, optical device, and optical line terminal |
| US10763968B1 (en) * | 2019-03-01 | 2020-09-01 | Google Llc | Coherent/IM-DD dual operation optical transceiver |
| CN110908213A (en) * | 2019-12-10 | 2020-03-24 | 电子科技大学 | Mach-Zehnder optical waveguide interferometer for realizing working point control based on wavelength tuning |
| CN114667051B (en) * | 2022-05-25 | 2022-08-30 | 绍兴中科通信设备有限公司 | Anti-interference optical module |
| CN115642474A (en) * | 2022-07-19 | 2023-01-24 | 成都英思嘉半导体技术有限公司 | High-speed Mach-Zehnder driver chip controlled by integrated silicon optical integrated circuit |
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| US6738187B2 (en) * | 2001-06-27 | 2004-05-18 | International Business Machines Corporation | Semiconductor optical amplifiers using wavelength locked loop tuning and equalization |
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| US6188497B1 (en) * | 1997-02-13 | 2001-02-13 | Lucent Technologies Inc. | Duo-binary signal encoding |
| CN101884004A (en) * | 2007-12-04 | 2010-11-10 | 株式会社藤仓 | Control apparatus and method of external modulator |
| CN101321019A (en) * | 2008-07-03 | 2008-12-10 | 上海交通大学 | Multi-wavelength light source apparatus and method for generating accurate wavelength interval and high flatness |
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Denomination of invention: An optical transceiver module with modulator dual arms that can be independently modulated Effective date of registration: 20220803 Granted publication date: 20161005 Pledgee: Agricultural Bank of China Co., Ltd. Shaoxing Paojiang Sub-branch Pledgor: SHAOXING ZKTEL EQUIPMENT Co.,Ltd. Registration number: Y2022330001592 |
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