CN205792600U - A kind of light R-T unit of descending wavelength-division multiplex - Google Patents
A kind of light R-T unit of descending wavelength-division multiplex Download PDFInfo
- Publication number
- CN205792600U CN205792600U CN201620504377.5U CN201620504377U CN205792600U CN 205792600 U CN205792600 U CN 205792600U CN 201620504377 U CN201620504377 U CN 201620504377U CN 205792600 U CN205792600 U CN 205792600U
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- China
- Prior art keywords
- wavelength
- light
- module
- descending
- division multiplex
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Abstract
A kind of light R-T unit of descending wavelength-division multiplex, including: descending amplification module, light emission module, Wavelength division multiplexing module, Optical Receivers, up amplification module；Described descending amplification module is connected with light emission module, and described light emission module is connected with Wavelength division multiplexing module, and described Optical Receivers is connected with up amplification module.The beneficial effects of the utility model are mainly manifested in: original radio frequency transmission is upgraded to optical transport, extends transmission distance；Use descending wavelength-division multiplex technique simultaneously, protect the transmission of the live optical signal of original 1550nm, when this device power-off, nor affect on the transmission of the live optical signal of 1550nm.
Description
Technical field
This utility model belongs to technical field of photo communication, especially relates to a kind of descending wavelength-division multiplex
Optical transceiver module.
Background technology
The C-DOCSIS local side apparatus of current application is that radio frequency exports form, owing to passing for radio frequency
Defeated coaxial cable has the characteristic of highly attenuating coefficient, and limited transmission distance, typically at 100 meters
Left and right.On the other hand, the unidirectional access network of current broadcasting and TV generally uses 1550nm optical signal transmission,
Original 1550nm live light letter how is processed when using C-DOCSIS technology to carry out Two-way Network
Number, also it is than a problem difficult to deal with in prior art.Based on two above reason,
Have impact on the extensive application of C-DOCSIS technology.
Summary of the invention
The purpose of this utility model is to provide the light R-T unit of a kind of descending wavelength-division multiplex, with
Solve above-mentioned technical problem.
This utility model solves the technical scheme that its technical problem is used:
A kind of light R-T unit of descending wavelength-division multiplex, including: descending amplification module, light emission
Module, Wavelength division multiplexing module, Optical Receivers, up amplification module；Described descending amplification mould
Block is connected with light emission module, and described light emission module is connected with Wavelength division multiplexing module, described light
Receiver module is connected with up amplification module.
Further, light emission module, the downlink radio frequency for 87～1000MHz frequency bandwidths is believed
Number light modulation launch output, a length of 1310nm of transmitted wave.
Further, Wavelength division multiplexing module, the wavelength-division for 1310nm and two wavelength of 1550nm is multiple
With, it is achieved the live optical signal of 1550nm and the mixing of 1310nm modulation light emission signal.
The beneficial effects of the utility model are mainly manifested in:
Use the light R-T unit of descending wavelength-division multiplex, original radio frequency transmission is upgraded to light and passes
Defeated, extend transmission distance, up to 20 kilometers；Use descending wavelength-division multiplex technique, protect former
There is the transmission of the live optical signal of 1550nm, when this device power-off, it is also possible to multiple by wavelength-division
Directly transmit live optical signal by module, do not affect the transmission of the live optical signal of 1550nm.
Accompanying drawing explanation
Fig. 1 is the optical transceiver module theory diagram of a kind of descending wavelength-division multiplex of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described further so that scheme is more clear bright
In vain.
With reference to shown in Fig. 1, the light R-T unit of a kind of descending wavelength-division multiplex, including: descending put
Big module, light emission module, Wavelength division multiplexing module, Optical Receivers, up amplification module；
Described descending amplification module is connected with light emission module, described light emission module and wavelength-division multiplex mould
Block connects, and described Optical Receivers is connected with up amplification module.
The setting of the light R-T unit of descending wavelength-division multiplex so that descending output optical signal can be defeated
Go out the mixed light signal for the live optical signal of 1550nm and the modulation light emission signal setting wavelength.
Descending input radio frequency inputs light emission module after being amplified by the radio frequency of descending amplification module, and light is sent out
Penetrating the wavelength-modulated light that module output needs, this wavelength-modulated optical signal is believed with the live light of 1550nm
Number through Wavelength division multiplexing module mix after export mixed light signal.In data feedback channel, Optical Receivers
Receive up input optical signal OPT IN, be demodulated into radiofrequency signal, put by up amplification module
Output after big.
Described descending amplification module, uses the CGA7718Z of RFMD company of the U.S. to recommend module,
Realize the radio frequency in 87～1000MHz frequency ranges to amplify.
Described light emission module, uses the BLLD-PSA2-D3 type laser instrument of Xiamen Bei Lai company,
Output is launched in the light modulation of the downlink radio-frequency signal realizing 87～1000MHz frequency bandwidths, launches
Wavelength is 1310nm.
Described Wavelength division multiplexing module, uses the SUN-WDM-13/15 type of Guilin Guang Long photoelectricity company
Wavelength division multiplexer, it is achieved the live optical signal of 1550nm and 1310nm modulate the mixed of light emission signal
Close.
Described Optical Receivers, uses the BLPD-PSA2-75B type PIN pipe of Xiamen Bei Lai company,
Realize uplink optical signal and be demodulated into the radiofrequency signal of 5～65MHz frequency bandwidths.
Described up amplification module, uses the TAT7457 type radio frequency of TRIQUINT company of the U.S. to put
Big pipe, it is achieved the radio frequency in 5～65MHz frequency ranges amplifies.
It is more than preferred implementation of the present utility model, does not limit protection of the present utility model
Scope.
Claims (8)
1. the light R-T unit of a descending wavelength-division multiplex, it is characterised in that including: descending amplification module,
Light emission module, Wavelength division multiplexing module, Optical Receivers, up amplification module；Described descending
Amplification module is connected with light emission module, and described light emission module is connected with Wavelength division multiplexing module,
Described Optical Receivers is connected with up amplification module.
The light R-T unit of descending wavelength-division multiplex the most according to claim 1, it is characterised in that:
Described light emission module, the light for the downlink radio-frequency signal of 87～1000MHz frequency bandwidths is adjusted
System launches output, a length of 1310nm of transmitted wave.
The light R-T unit of descending wavelength-division multiplex the most according to claim 1, it is characterised in that:
Described Wavelength division multiplexing module, for 1310nm and the wavelength-division multiplex of two wavelength of 1550nm, it is achieved
The live optical signal of 1550nm and the mixing of 1310nm modulation light emission signal.
The light R-T unit of descending wavelength-division multiplex the most according to claim 1, it is characterised in that:
Described descending amplification module uses CGA7718Z to recommend module, it is achieved 87～1000MHz frequency models
Enclose interior radio frequency to amplify.
The light R-T unit of descending wavelength-division multiplex the most according to claim 1, it is characterised in that:
Described light emission module uses laser instrument, it is achieved the downlink radio frequency of 87～1000MHz frequency bandwidths
Output, a length of 1310nm of transmitted wave are launched in the light modulation of signal.
The light R-T unit of descending wavelength-division multiplex the most according to claim 1, it is characterised in that:
Described Wavelength division multiplexing module uses wavelength division multiplexer, it is achieved the live optical signal of 1550nm and 1310nm
The mixing of modulation light emission signal.
The light R-T unit of descending wavelength-division multiplex the most according to claim 1, it is characterised in that:
Described Optical Receivers, uses PIN pipe, it is achieved uplink optical signal is demodulated into 5～65MHz frequencies
The radiofrequency signal of bandwidth.
The light R-T unit of descending wavelength-division multiplex the most according to claim 1, it is characterised in that:
Described up amplification module uses radio frequency amplifier tube, it is achieved the radio frequency in 5～65MHz frequency ranges
Amplify.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620504377.5U CN205792600U (en) | 2016-05-27 | 2016-05-27 | A kind of light R-T unit of descending wavelength-division multiplex |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620504377.5U CN205792600U (en) | 2016-05-27 | 2016-05-27 | A kind of light R-T unit of descending wavelength-division multiplex |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205792600U true CN205792600U (en) | 2016-12-07 |
Family
ID=59979134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620504377.5U Expired - Fee Related CN205792600U (en) | 2016-05-27 | 2016-05-27 | A kind of light R-T unit of descending wavelength-division multiplex |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205792600U (en) |
-
2016
- 2016-05-27 CN CN201620504377.5U patent/CN205792600U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20190527 |