CN208421324U - A kind of bidirectional light receiving and transmitting unification module - Google Patents
A kind of bidirectional light receiving and transmitting unification module Download PDFInfo
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- CN208421324U CN208421324U CN201821288087.7U CN201821288087U CN208421324U CN 208421324 U CN208421324 U CN 208421324U CN 201821288087 U CN201821288087 U CN 201821288087U CN 208421324 U CN208421324 U CN 208421324U
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Abstract
The utility model discloses a kind of bidirectional light receiving and transmittings to unify module, including light emitting unit, wavelength-division multiplex unit, polarization spectro unit, optically-active unit, mode-expansion unit, light receiving unit, the optical signal of different wave length is passed to wavelength-division multiplex unit by light emitting unit, wavelength-division multiplex unit separates the optical signal of each different wave length, the optical signal of different wave length is directly transmitted through polarization spectro unit, its polarization state remains unchanged after optically-active unit, and it is exported after magnetic rotation piece and wave plate by output end, optically-active unit includes optical rotation plate and wave plate, optically-active unit is of coupled connections with mode-expansion unit, mode-expansion unit is integrated on same silicon chip by silicon photon technology, then signal is passed into light receiving unit, light receiving unit includes optical detection diode and preamplifier, optical signals optical detection diode turns It is changed to electric signal, the electric signal of output phase code rate after preamplifier, light receiving unit can be realized the transformation of optical signal to electric signal.
Description
Technical field
The utility model relates to technical field of photo communication more particularly to a kind of bidirectional light receiving and transmitting to unify module.
Background technique
With the development of economic and technical, requirement of the people to broadband becomes higher and higher.The development of Fibre Optical Communication Technology
The sharp increase of data service in recent years, so that high-speed optical module large-scale application in optical communication system.Single fiber bi-directional is
Referring to the optical signal that can receive and dispatch both direction with simultaneous transmission in an optical fiber, conventional optical fiber transmission is that single fiber is unidirectional, this
Sample will realize that two-way communication just needs two optical fiber.In comparison, single fiber bi-directional technology only uses an optical fiber and just completes
The work that original two optical fiber could be completed, the transmission quantity of existing fiber is doubled, so that optical fiber be greatly saved
Resource.
Utility model content
The utility model in order to overcome the shortcomings in the prior art, provides a kind of bidirectional light receiving and transmitting unification module.
The utility model is achieved through the following technical solutions:
A kind of bidirectional light receiving and transmitting unification module, including light emitting unit, wavelength-division multiplex unit, polarization spectro unit, optically-active
Unit, mode-expansion unit, light receiving unit, the light emitting unit make it in light for converting electrical signals to optical signal
It is transmitted in fibre, the optical signal of different wave length is passed to wavelength-division multiplex unit, the wavelength-division multiplex unit by the light emitting unit
The optical signal of each different wave length is separated, the optical signal of different wave length is directly transmitted through the polarization spectro unit, through described
Its polarization state remains unchanged after optically-active unit, and is exported after magnetic rotation piece and wave plate by output end, the optically-active list
Member includes optical rotation plate and wave plate, and the optically-active unit is of coupled connections with the mode-expansion unit, and the mode-expansion unit is logical
It crosses silicon photon technology to be integrated on same silicon chip, signal is then passed into light receiving unit, the light receiving unit includes
Optical detection diode and preamplifier are converted to telecommunications by optical detection diode after the optical signal input module of one constant bit rate
Number, the electric signal of output phase code rate after preamplifier, the signal of output is generally PECL level, the light emitting unit
It can be realized the transformation of electric signal to optical signal, light receiving unit can be realized the transformation of optical signal to electric signal.
Further, the light emitting unit includes the laser that laser modulator and the laser modulator are electrical connected
Device, the laser driving circuit being electrically connected with the laser are mended with the temperature that the laser driving circuit is electrically connected
Circuit is repaid, the temperature-compensation circuit and the laser modulator are electrically connected.
Further, the mode-expansion unit includes silicon nitride waveguides, SOI waveguide, buffer layer and silicon substrate layer.
Further, the silicon nitride waveguides and the SOI waveguide intercouple connection in the upper surface of the buffer layer,
The upper surface of the silicon substrate layer is arranged in the buffer layer.
Compared with prior art, it the beneficial effects of the utility model are: the structure design of the utility model is reasonable, is using
When, optical signal is converted electrical signals to using light emitting unit, then transmits it in a fiber, thus by the light of different wave length
Signal passes to wavelength-division multiplex unit, and wavelength-division multiplex unit separates the optical signal of each different wave length, the multi-wavelength light of transmitting
Signal be multiplexed and demultiplex multiple wavelength optical signal to be received is transmitted from single fiber head, the light of different wave length
Signal is directly transmitted through the polarization spectro unit, its polarization state remains unchanged after optically-active unit, then passes through mode-expansion
Unit coupling, is received finally by light receiving unit, and waveguide dimensions are uniform, be can effectively reduce loss of signal, is reduced puppet instead
It penetrates and insensitive to environment temperature.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Referring to Fig. 1, a kind of bidirectional light receiving and transmitting unifies module, including light emitting unit 1, wavelength-division multiplex unit 2,
Polarization spectro unit 3, optically-active unit 4, mode-expansion unit 5, light receiving unit 6, the light emitting unit 1 are used for electric signal
Optical signal is converted to, transmits it in a fiber, the optical signal of different wave length is passed to wavelength-division multiplex by the light emitting unit 1
Unit 2, the wavelength-division multiplex unit 2 separate the optical signal of each different wave length, the optical signal of different wave length directly transmitted through
The polarization spectro unit 3, its polarization state remains unchanged after the optically-active unit 4, and through magnetic rotation piece 41 and wave plate 42
It is exported afterwards by output end, the optically-active unit 4 includes optical rotation plate 41 and wave plate 42, the optically-active unit 4 and the mould spot
Converter unit 5 is of coupled connections, and the mode-expansion unit 5 is integrated on same silicon chip by silicon photon technology, then will letter
Light receiving unit 6 number is passed to, the light receiving unit 6 includes optical detection diode 61 and preamplifier 62, a constant bit rate
Optical signal input module after electric signal is converted to by optical detection diode 61, the output phase code rate after preamplifier 62
Electric signal, the signal of output are generally PECL level, and the light emitting unit 1 can be realized the transformation of electric signal to optical signal,
Light receiving unit 6 can be realized the transformation of optical signal to electric signal.
Referring to Fig. 1, the light emitting unit 1 is electrical connected including laser modulator 11, with the laser modulator 11
Laser 12, be electrically connected with the laser 12 laser driving circuit 13, with 13 electricity of the laser driving circuit
Property connection temperature-compensation circuit 14, the temperature-compensation circuit 14 is electrically connected with the laser modulator 11；The mould spot
Converter unit 5 includes silicon nitride waveguides 51, SOI waveguide 52, buffer layer 53 and silicon substrate layer 54,51 He of silicon nitride waveguides
The SOI waveguide 52 intercouples connection in the upper surface of the buffer layer 53, and the buffer layer 53 is arranged in the silicon substrate
The upper surface of layer 54.
Referring to Fig. 1, when in use, converting electrical signals to optical signal using light emitting unit 1, then making it in optical fiber
Middle transmission, so that the optical signal of different wave length is passed to wavelength-division multiplex unit 2, wavelength-division multiplex unit 2 is by each different wave length
Optical signal separate, the multiple wavelength optical signal of transmitting be multiplexed and will transmit multi-wavelength light to be received from single fiber head
Signal is demultiplexed, and the optical signal of different wave length is directly transmitted through the polarization spectro unit 3, it is inclined after optically-active unit 4
Polarization state remains unchanged, and is then coupled, is received finally by light receiving unit 6, waveguide dimensions are equal by mode-expansion unit 5
It is even, it can effectively reduce loss of signal, reduce false reflection and is insensitive to environment temperature.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Be only the utility model preference, be not intended to limit the utility model, do not departing from the spirit and scope of the utility model
Under the premise of, the utility model also has various changes and improvements, these changes and improvements both fall within claimed it is practical
In novel range.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (4)
1. a kind of bidirectional light receiving and transmitting unifies module, it is characterised in that: including light emitting unit (1), wavelength-division multiplex unit (2), partially
Shake spectrophotometric unit (3), optically-active unit (4), mode-expansion unit (5), light receiving unit (6), and the light emitting unit (1) is used for
Optical signal is converted electrical signals to, transmits it in a fiber, the light emitting unit (1) transmits the optical signal of different wave length
It gives wavelength-division multiplex unit (2), the wavelength-division multiplex unit (2) separates the optical signal of each different wave length, the light of different wave length
Signal is directly transmitted through the polarization spectro unit (3), its polarization state remains unchanged after the optically-active unit (4), and through magnetic
It is exported after causing optical rotation plate (41) and wave plate (42) by output end, the optically-active unit (4) includes optical rotation plate (41) and wave plate
(42), the optically-active unit (4) is of coupled connections with the mode-expansion unit (5), and the mode-expansion unit (5) passes through silicon light
Then sub- Integration ofTechnology passes to signal light receiving unit (6) on same silicon chip, the light receiving unit (6) includes
Optical detection diode (61) and preamplifier (62), by optical detection diode (61) after the optical signal input module of a constant bit rate
Electric signal is converted to, the electric signal of output phase code rate, the signal of output are generally PECL level after preamplifier (62),
The light receiving unit (6) can be realized the transformation of optical signal to electric signal.
2. a kind of bidirectional light receiving and transmitting according to claim 1 unifies module, it is characterised in that: the light emitting unit (1)
The laser (12) being electrical connected including laser modulator (11) and the laser modulator (11) and the laser (12)
The laser driving circuit (13) of electric connection, the temperature-compensation circuit being electrically connected with the laser driving circuit (13)
(14), the temperature-compensation circuit (14) and the laser modulator (11) are electrically connected.
3. a kind of bidirectional light receiving and transmitting according to claim 2 unifies module, it is characterised in that: the mode-expansion unit
It (5) include silicon nitride waveguides (51), SOI waveguide (52), buffer layer (53) and silicon substrate layer (54).
4. a kind of bidirectional light receiving and transmitting according to claim 3 unifies module, it is characterised in that: the silicon nitride waveguides (51)
It intercouples connection with the SOI waveguide (52) in the upper surface of the buffer layer (53), the buffer layer (53) is arranged in institute
State the upper surface of silicon substrate layer (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821288087.7U CN208421324U (en) | 2018-08-10 | 2018-08-10 | A kind of bidirectional light receiving and transmitting unification module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821288087.7U CN208421324U (en) | 2018-08-10 | 2018-08-10 | A kind of bidirectional light receiving and transmitting unification module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208421324U true CN208421324U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821288087.7U Expired - Fee Related CN208421324U (en) | 2018-08-10 | 2018-08-10 | A kind of bidirectional light receiving and transmitting unification module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208421324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112764008A (en) * | 2020-12-28 | 2021-05-07 | 武汉光谷信息光电子创新中心有限公司 | Laser radar chip |
-
2018
- 2018-08-10 CN CN201821288087.7U patent/CN208421324U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112764008A (en) * | 2020-12-28 | 2021-05-07 | 武汉光谷信息光电子创新中心有限公司 | Laser radar chip |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |