CN203261346U - Single-fiber four-wavelength-division-multiplexing light-receiving device - Google Patents
Single-fiber four-wavelength-division-multiplexing light-receiving device Download PDFInfo
- Publication number
- CN203261346U CN203261346U CN 201320307772 CN201320307772U CN203261346U CN 203261346 U CN203261346 U CN 203261346U CN 201320307772 CN201320307772 CN 201320307772 CN 201320307772 U CN201320307772 U CN 201320307772U CN 203261346 U CN203261346 U CN 203261346U
- Authority
- CN
- China
- Prior art keywords
- wavelength division
- signal
- optical signal
- catv
- network
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model discloses a single-fiber four-wavelength-division-multiplexing light-receiving device which is used in fiber-to-the-home (FTTH) terminal equipment. The device consists of two-stage wavelength division multiplexers, an IP network receiving module, and two CATV photoelectric conversion modules. A 1490/1310/1550/1570nm optical signal passes through the first-stage wavelength division multiplexer via a fiber interface and then is divided into a 1490/1310nm bidirectional optical signal and a 1550/1570nm optical signal, wherein the 1490/1310nm bidirectional optical signal is transmitted in a manner of bypass to the IP network receiving module and then the IP network receiving module outputs an IP network signal. The 1550/1570nm optical signal passes through the second-stage wavelength division multiplexer and then is divided into a 1550nm downlink optical signal and a 1570nm downlink optical signal which are respectively transmitted to the two corresponding CATV photoelectric conversion modules. And then the two CATV photoelectric conversion modules respectively output an analog television signal or a digital television radio-frequency signal. The device is simple in structure, convenient for implementation, and capable of achieving the access of one bidirectional data and two unidirectional cable-television signals.
Description
Technical field
The utility model belongs to optical communication WDM technical field, relates to a kind of single fiber four wavelength division multiplexing optical pickup apparatus of using in Fiber to the home (FTTH) terminal equipment.
Background technology
It is at present, practical that Fiber to the home (FTTH) that technology is adopts the three-wavelength multiplex technique.Use GPON (or EPON) technology to realize the data broadband access, operation wavelength is descending 1490nm, up 1310nm; Use under 1550nm wavelength broadcast mode and pass cable TV signal; The three-wavelength signal is realized transmission in optical fiber distributing network (PON) through wave multiplexer.
In said system, cable TV (CATV) signal bandwidth is 1000MHz (850MHz), and all frequency bands (channel) are taken by cable TV station's planning.If in the future program channel increase so that frequency band not or the user have many covers to manage program by oneself to need to transmit, need open up new transmission channel, upgrade cost is higher.
The utility model content
The purpose of this utility model is the problem that prior art exists is solved, provide a kind of simple in structure, implement convenient, can realize the single fiber four wavelength division multiplexing optical pickup apparatus that one road bi-directional data and two-way one-way CATV signal (broadcast channel) access.
The technical solution that adopts for achieving the above object is such: the single fiber four wavelength division multiplexing optical pickup apparatus that provide are by first order wavelength division multiplexer, second level wavelength division multiplexer, IP network receiver module and two CATV photoelectric conversion modules form, the 1490/1310/1550/1570nm light signal is by defeated 1490/1310nm (EPON) bidirectional optical signal and 1550/1570nm (CATV) light signal of being divided into after first order wavelength division multiplexer of optical fiber interface, wherein the bypass of 1490/1310nm bidirectional optical signal is to IP network receiver module and then output IP network signal; Another road 1550/1570nm light signal is divided into again 1550nm downlink optical signal and 1570nm downlink optical signal after the wavelength division multiplexer of the second level, two ways of optical signals is transported to respectively the CATV photoelectric conversion module of a correspondence, then respectively exports one road simulated television or digital television radio-frequency signal by two CATV photoelectric conversion modules.
In above-mentioned single fiber four wavelength division multiplexing optical pickup apparatus, said IP network receiver module is GPON mixed-media network modules mixed-media or EPON mixed-media network modules mixed-media.
Compared with prior art, the utility model is on three-wavelength multiplexing equipment basis, adopt four wavelength division multiplexing namely to increase the mode of one tunnel downlink transfer passage, do not needing under the prerequisite that fiber optic network (PON) is transformed, the transmission channel of the system that expands that Fiber to the home, the cost of the network upgrade that reduced that Fiber to the home.
Description of drawings
Fig. 1 is the structural representation that these single fiber four wavelength division multiplexing optical pickup apparatus form.
In figure: 1-first order wavelength division multiplexer, 2-second level wavelength division multiplexer, 3-IP network receiver module, 4-CATV photoelectric conversion module, 5-CATV photoelectric conversion module.
Embodiment
Referring to accompanying drawing, single fiber four wavelength division multiplexing optical pickup apparatus described in the utility model comprise first order wavelength division multiplexer 1, second level wavelength division multiplexer 2, IP network receiver module 3 and two CATV photoelectric conversion modules 4,5.In four wavelength-divisions Fiber to the home systems, send 1310nm/1490nm IP network GPON (EPON) signal and 1550nm and 1570nm cable TV (CATV) signal from optical-fiber network (PON) by simple optical fiber.First order wavelength division multiplexer 1 by this optical pickup apparatus is up and 1490nm downlink optical signal Pang Lu Give IP network receiver module 3(GPON (EPON) mixed-media network modules mixed-media with 1310nm), after latter's conversion by RJ45 mouth output IP network signal; Second level wavelength division multiplexer 2 by this optical pickup apparatus separates with the 1570nm downlink optical signal 1550nm is descending again, received respectively the light signal of 1550nm or 1570nm by two CATV photoelectric conversion modules (Optical Receivers) 4,5, simulated television or digital television radio-frequency (RF) signal that output is corresponding have so namely been realized the access of one road bi-directional data and two-way one-way CATV signal (broadcast channel).
Claims (2)
1. single fiber four wavelength division multiplexing optical pickup apparatus, it is characterized in that: formed by first order wavelength division multiplexer (1), second level wavelength division multiplexer (2), IP network receiver module (3) and two CATV photoelectric conversion modules (4,5), the 1490/1310/1550/1570nm light signal is by defeated 1490/1310nm bidirectional optical signal and the 1550/1570nm light signal of being divided into after first order wavelength division multiplexer (1) of optical fiber interface, and wherein the bypass of 1490/1310nm bidirectional optical signal is to IP network receiver module (3) and then output IP network signal; Another road 1550/1570nm light signal is divided into again 1550nm downlink optical signal and 1570nm downlink optical signal after second level wavelength division multiplexer (2), two ways of optical signals is transported to respectively the CATV photoelectric conversion module (4,5) of a correspondence, then respectively exports one road simulated television or digital television radio-frequency signal by two CATV photoelectric conversion modules (4,5).
2. single fiber four wavelength division multiplexing optical pickup apparatus according to claim 1, it is characterized in that: said IP network receiver module (3) is GPON mixed-media network modules mixed-media or EPON mixed-media network modules mixed-media.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320307772 CN203261346U (en) | 2013-05-30 | 2013-05-30 | Single-fiber four-wavelength-division-multiplexing light-receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320307772 CN203261346U (en) | 2013-05-30 | 2013-05-30 | Single-fiber four-wavelength-division-multiplexing light-receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203261346U true CN203261346U (en) | 2013-10-30 |
Family
ID=49473876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320307772 Expired - Fee Related CN203261346U (en) | 2013-05-30 | 2013-05-30 | Single-fiber four-wavelength-division-multiplexing light-receiving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203261346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117097928A (en) * | 2023-10-18 | 2023-11-21 | 深圳市广为通信技术有限公司 | Optical scrambling unidirectional cable television encryption billing system |
-
2013
- 2013-05-30 CN CN 201320307772 patent/CN203261346U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117097928A (en) * | 2023-10-18 | 2023-11-21 | 深圳市广为通信技术有限公司 | Optical scrambling unidirectional cable television encryption billing system |
| CN117097928B (en) * | 2023-10-18 | 2024-02-06 | 深圳市广为通信技术有限公司 | Optical scrambling unidirectional cable television encryption billing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101410158B1 (en) | System, method and relevant device for signal transmission | |
| CN102726005A (en) | DOCSIS-protocol-based access method, apparatus and system | |
| CN103262449B (en) | passive optical network device and method | |
| US11689312B2 (en) | System and methods for coherent optical extension | |
| CN103354625A (en) | Stacked wavelength-division and time-division multiplexing passive optical network transmission system based on OFDM (orthogonal frequency division multiple) | |
| US9621296B2 (en) | Remote node device, optical network unit and system and communication method thereof | |
| CN103338088A (en) | Optical fiber communication multiplexing device | |
| CN204190779U (en) | A kind of based on multiplexed extra-high voltage direct-current valve control device transmission system | |
| CN101944955A (en) | Converged network transmission system carrying data and video signals | |
| CN103095372A (en) | Time-division multiplex passive optical network system and communication method based on multi-core optical fiber | |
| CN202889527U (en) | High-definition non-compression multi-service digital video optical transmitter and receiver | |
| CN103580756A (en) | Multi-channel independent Ethernet integrated service unvarnished transmission optical transceiver | |
| CN203261346U (en) | Single-fiber four-wavelength-division-multiplexing light-receiving device | |
| CN202026321U (en) | Integrated access device for three-wavelength optical fiber network terminal | |
| CN110061798A (en) | WDM optical transmission equipment, system and implementation method | |
| US9479258B1 (en) | Electrical add/drop multiplexer with pass through port related applications | |
| CN103957475A (en) | Networking system allowing GPON and XG-PON to be concomitant and application | |
| CN210536642U (en) | Optical module assembly and optical communication transmission system | |
| CN104065444B (en) | A kind of system and method for utilization Fiber Bragg Grating FBG equilibrium RSOA modulation bandwidths | |
| CN207218703U (en) | A kind of integration of three networks network of six wavelength applications | |
| CN206481307U (en) | The four wavelength optical assemblies for integration of three networks network | |
| CN203801031U (en) | Novel cable-television bidirectional access network system | |
| CN207037183U (en) | One kind optimization FTTH double-fiber household-entry systems | |
| CN203166944U (en) | An optical fiber multiplier | |
| TWI632785B (en) | Method for transmitting signals and expanding optical fiber network systems |
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: 20131030 Termination date: 20180530 |