CN102255670A - Single-fibre two-way light module - Google Patents

Single-fibre two-way light module Download PDF

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Publication number
CN102255670A
CN102255670A CN2011101956536A CN201110195653A CN102255670A CN 102255670 A CN102255670 A CN 102255670A CN 2011101956536 A CN2011101956536 A CN 2011101956536A CN 201110195653 A CN201110195653 A CN 201110195653A CN 102255670 A CN102255670 A CN 102255670A
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CN
China
Prior art keywords
signal
fiber
optical
chip microcomputer
laser
Prior art date
Application number
CN2011101956536A
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Chinese (zh)
Inventor
穆磊
皮文博
汪颖
王飚
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武汉电信器件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉电信器件有限公司 filed Critical 武汉电信器件有限公司
Priority to CN2011101956536A priority Critical patent/CN102255670A/en
Publication of CN102255670A publication Critical patent/CN102255670A/en

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Abstract

The invention discloses a single-fibre two-way light module, comprising a single-fibre two-way light device, a single chip machine, a laser driving circuit and a limiting amplifier. The limiting amplifier is connected with the single chip machine and the single-fibre two-way light device. An incident light signal is converted into a first electric signal through the single-fibre two-way light device and transmitted to the limiting amplifier. The single chip machine controls the limiting amplifier to amplify and output the first electric signal. The laser driving circuit is connected with the single chip machine and the single-fibre two-way light device. An input second electric signal is transmitted to the laser driving circuit. The single chip machine controls the laser driving circuit to supply bias current and modulation current to the single-fibre two-way light device according to the second electric signal, so that the single-fibre two-way light device outputs an emergent light signal. According to the invention, one optical fibre is used for transmitting and receiving the optical signal; the circuit structure is simple; the device is compact; the light module is small in volume; the high-rate transmission can be realized; and, with the premise of satisfying the technical requirements of the system, the reliability of the system is improved.

Description

A kind of simplex optical module
Technical field
The present invention relates to the optical module of optical communication field, relate in particular to a kind of two-forty simplex optical module.
Background technology
Now, the optical communication business development is rapid, and the effect that optical module plays therein is also more and more important.Traditional high-speed optical module adopts two optical fiber to realize that light signal transmits and receives, and emission wavelength and reception wavelength can be the same or different.
In optical fiber communication, the cost of optical fiber occupies very big proportion in total cost, if can change the occupation mode of existing fiber, adopt an optical fiber to realize optical signal transmitting and reception, will reduce the optical communication cost greatly, save equipment investment, reduce the optical fiber consumption, improve system reliability, have very high industrial value.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of simplex optical module of two-forty, uses an optical fiber to realize that light signal transmits and receives, and saves fiber resource.
In order to solve the problems of the technologies described above, the invention provides a kind of simplex optical module, comprise single fiber bi-directional optical device, single-chip microcomputer, drive circuit for laser and limiting amplifier; Described limiting amplifier connects single-chip microcomputer and single fiber bi-directional optical device, and incident optical signal is converted to first signal of telecommunication through the single fiber bi-directional optical device and is delivered to limiting amplifier, and the amplification of Single-chip Controlling limiting amplifier is also exported described first signal of telecommunication; Described drive circuit for laser connects single-chip microcomputer and single fiber bi-directional optical device, second signal of telecommunication of input is sent to drive circuit for laser, the Single-chip Controlling drive circuit for laser provides bias current and modulated current for the single fiber bi-directional optical device according to second signal of telecommunication, makes single fiber bi-directional optical device output emergent light signal.
Further, also include the first clock and data recovery unit, it connects described single-chip microcomputer and limiting amplifier, and the Single-chip Controlling first clock and data recovery unit carries out the quality adjustment to first signal of telecommunication of limiting amplifier output.
Further, also include the second clock data recovery unit, it connects described single-chip microcomputer and drive circuit for laser, and Single-chip Controlling second clock data recovery unit is carried out the quality adjustment to being sent to drive circuit for laser second signal of telecommunication before.
Further, also include sample circuit backlight, it connects described single-chip microcomputer and single fiber bi-directional optical device; The single fiber bi-directional optical device is given single-chip microcomputer by sample circuit backlight with the Feedback of Power of emergent light signal, so that the Single-chip Controlling drive circuit for laser is adjusted described bias current in real time, keeps the emergent light signal power stable.
Further, also include temperature sampling circuit, it connects described single-chip microcomputer and single fiber bi-directional optical device; The single fiber bi-directional optical device feeds back to single-chip microcomputer by temperature sampling circuit in real time with the temperature of optical module, and single-chip microcomputer is adjusted described modulated current according to temperature control drive circuit for laser, to realize automatic temperature-adjusting control.
Further, described emergent light signal is different with the incident optical signal wavelength.
Further, the wavelength of described emergent light signal is 1330nm.
Further, the wavelength of described incident optical signal is 1270nm.
A kind of simplex optical module of the present invention uses an optical fiber to realize optical signal transmitting and reception, circuit structure is simple, the device compactness, the optical module volume is little, can realize high rate data transmission, under the prerequisite that satisfies the systems technology requirement, save half fiber resource, reduce system cost greatly, improved system reliability.
Description of drawings
Fig. 1 is a theory diagram of the present invention.
Wherein: 1 single fiber bi-directional optical device; 2 sample circuits backlight; 3 temperature sampling circuits; 4 limiting amplifiers; 5 drive circuit for laser; 6 single-chip microcomputers; 7 first clock and data recovery unit; 8 second clock data recovery unit.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, can be implemented so that those skilled in the art can better understand the present invention also, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, a kind of simplex optical module of the present invention comprises single fiber bi-directional optical device 1, limiting amplifier 4, drive circuit for laser 5, single-chip microcomputer 6.
Limiting amplifier 4 connects single-chip microcomputer 6 and single fiber bi-directional optical device 1, and incident optical signal is converted to first signal of telecommunication through single fiber bi-directional optical device 1 and is delivered to limiting amplifier 4, and single-chip microcomputer 6 control limiting amplifiers, 4 amplifications are also exported first signal of telecommunication; Drive circuit for laser 5 connects single-chip microcomputer 6 and single fiber bi-directional optical device 1, second signal of telecommunication of input is sent to drive circuit for laser 5, single-chip microcomputer 6 control drive circuit for laser 5 provide bias current and modulated current for single fiber bi-directional optical device 1 according to second signal of telecommunication, make single fiber bi-directional optical device 1 output emergent light signal.
In order to improve the quality of the signal of telecommunication, the present invention also can include the first clock and data recovery unit 7 and second clock data recovery unit 8.First data recovery unit 7 connects single-chip microcomputer 6 and limiting amplifier 4, first signal of telecommunication passes through the limiting amplifier 4 and the first clock and data recovery unit 7 successively, just output then, in this process, first signal of telecommunication of the 7 pairs of limiting amplifier outputs in the single-chip microcomputer 6 controls first clock and data recovery unit carries out the quality adjustment, makes the signal of telecommunication of output the best in quality.Second clock data recovery unit 8 connects single-chip microcomputer 6 and drive circuit for laser 5, second signal of telecommunication of input enters before the drive circuit for laser 5, be sent to second clock data recovery unit 8 earlier, equally, 8 pairs second signals of telecommunication of single-chip microcomputer 6 control second clock data recovery unit carry out the quality adjustment.
As a further improvement on the present invention, the present invention also can include sample circuit 2 backlight and temperature sampling circuit 3, and sample circuit 2 backlight can make the emergent light signal power stable, and temperature sampling circuit 3 can make optical module realize automatic temperature-adjusting control.Wherein, sample circuit 2 backlight connects single-chip microcomputer 6 and single fiber bi-directional optical device 1, single fiber bi-directional optical device 1 is given single-chip microcomputer 6 by sample circuit 2 backlight with the Feedback of Power of emergent light signal, so that Single-chip Controlling drive circuit for laser 5 is adjusted bias current in real time, keep the emergent light signal power stable; Temperature sampling circuit 3 connects single-chip microcomputer 6 and single fiber bi-directional optical device 1; Single fiber bi-directional optical device 1 feeds back to single-chip microcomputer 6 by temperature sampling circuit 3 in real time with the temperature of optical module, and single-chip microcomputer 6 is adjusted modulated currents according to temperature control drive circuit for laser 5, makes the optical module extinction ratio constant, realizes automatic temperature-adjusting control.
It needs to be noted that the emergent light signal that relates among the present invention and the wavelength of incident optical signal and inequality can be 1330nm as the wavelength of emergent light signal, the wavelength of incident optical signal can be 1270nm; Certainly, not as limit, the user can select other wavelength as required for use in actual the use.
In addition, the optical module that the present invention relates to is not limited to packing forms and transmission rate, can make and satisfy MSA(Multi-Source Agreement, multi-source agreement) the SFP+(Enhanced Small Form Factor Pluggable Module of Yao Qiuing, the hot-swappable module of enhancement mode miniaturization) encapsulation or XFP(10Gigabit Small Form Factor Pluggable Module, the hot-swappable optical module of 10Gbit/s miniaturization) encapsulation.
The above embodiment is the preferred embodiment that proves absolutely that the present invention lifts, and protection scope of the present invention is not limited thereto.Being equal to that those skilled in the art are done on basis of the present invention substitutes or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.

Claims (8)

1. a simplex optical module is characterized in that, comprises single fiber bi-directional optical device, single-chip microcomputer, drive circuit for laser and limiting amplifier;
Described limiting amplifier connects single-chip microcomputer and single fiber bi-directional optical device, and incident optical signal is converted to first signal of telecommunication through the single fiber bi-directional optical device and is delivered to limiting amplifier, and the amplification of Single-chip Controlling limiting amplifier is also exported described first signal of telecommunication;
Described drive circuit for laser connects single-chip microcomputer and single fiber bi-directional optical device, second signal of telecommunication of input is sent to drive circuit for laser, the Single-chip Controlling drive circuit for laser provides bias current and modulated current for the single fiber bi-directional optical device according to second signal of telecommunication, makes single fiber bi-directional optical device output emergent light signal.
2. a kind of simplex optical module according to claim 1, it is characterized in that, also include the first clock and data recovery unit, it connects described single-chip microcomputer and limiting amplifier, and the Single-chip Controlling first clock and data recovery unit carries out the quality adjustment to first signal of telecommunication of limiting amplifier output.
3. a kind of simplex optical module according to claim 1, it is characterized in that, also include the second clock data recovery unit, it connects described single-chip microcomputer and drive circuit for laser, and Single-chip Controlling second clock data recovery unit is carried out the quality adjustment to being sent to drive circuit for laser second signal of telecommunication before.
4. a kind of simplex optical module according to claim 1 is characterized in that, also includes sample circuit backlight, and it connects described single-chip microcomputer and single fiber bi-directional optical device; The single fiber bi-directional optical device is given single-chip microcomputer by sample circuit backlight with the Feedback of Power of emergent light signal, so that the Single-chip Controlling drive circuit for laser is adjusted described bias current in real time, keeps the emergent light signal power stable.
5. a kind of simplex optical module according to claim 1 is characterized in that, also includes temperature sampling circuit, and it connects described single-chip microcomputer and single fiber bi-directional optical device; The single fiber bi-directional optical device feeds back to single-chip microcomputer by temperature sampling circuit in real time with the temperature of optical module, and single-chip microcomputer is adjusted described modulated current according to temperature control drive circuit for laser, to realize automatic temperature-adjusting control.
6. according to each described a kind of simplex optical module in the claim 1 ~ 5, it is characterized in that described emergent light signal is different with the incident optical signal wavelength.
7. a kind of simplex optical module according to claim 6 is characterized in that, the wavelength of described emergent light signal is 1330nm.
8. a kind of simplex optical module according to claim 6 is characterized in that, the wavelength of described incident optical signal is 1270nm.
CN2011101956536A 2011-07-13 2011-07-13 Single-fibre two-way light module CN102255670A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101956536A CN102255670A (en) 2011-07-13 2011-07-13 Single-fibre two-way light module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011101956536A CN102255670A (en) 2011-07-13 2011-07-13 Single-fibre two-way light module

Publications (1)

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CN102255670A true CN102255670A (en) 2011-11-23

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010160412A (en) * 2009-01-09 2010-07-22 Nec Corp Optical module
CN101854211A (en) * 2010-06-09 2010-10-06 索尔思光电(成都)有限公司 High-speed single-fiber bidirectional optical module
CN101895350A (en) * 2010-08-17 2010-11-24 索尔思光电(成都)有限公司 10G Ethernet passive network single-fiber bidirectional optical module

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010160412A (en) * 2009-01-09 2010-07-22 Nec Corp Optical module
CN101854211A (en) * 2010-06-09 2010-10-06 索尔思光电(成都)有限公司 High-speed single-fiber bidirectional optical module
CN101895350A (en) * 2010-08-17 2010-11-24 索尔思光电(成都)有限公司 10G Ethernet passive network single-fiber bidirectional optical module

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