JP2012015577A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2012015577A5 JP2012015577A5 JP2010147140A JP2010147140A JP2012015577A5 JP 2012015577 A5 JP2012015577 A5 JP 2012015577A5 JP 2010147140 A JP2010147140 A JP 2010147140A JP 2010147140 A JP2010147140 A JP 2010147140A JP 2012015577 A5 JP2012015577 A5 JP 2012015577A5
- Authority
- JP
- Japan
- Prior art keywords
- light
- wavelength
- optical transmission
- optical
- downstream
- 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.)
- Pending
Links
Claims (1)
互いに異なる上り波長及び下り波長を使用する複数の第１の光送受信装置（１２−１〜１２−ｎ）と、
当該複数の第１の光送受信装置と通信する複数の第２の光送受信装置（５０−１〜５０−ｎ）と、
当該複数の第１の光送受信装置が出力する下り光を波長多重し、光伝送路からの多重化された上り光を当該複数の第１の送受信装置のそれぞれに向かう上り光に波長分離する第１の波長多重分離手段（１４）
とを具備し、
当該光伝送路が、
当該複数の第２の光送受信装置が出力する上り光を波長多重し、当該第１の波長多重分離手段で多重された当該下り光を、当該複数の第２の送受信装置のそれぞれに向かう下り光に波長分離する第２の波長多重分離手段（４６）と、
当該第１の波長多重分離手段と当該第２の波長多重分離手段との間に配置される反射器（４４）
とを具備し、
当該第１の光送受信装置が、当該複数の第１の光送受信装置が使用する全部の下り波長と、当該複数の第１の光送受信装置が使用する全部の上り波長とを多重分離する第１のＷＤＭカプラ（２８）と、信号光源となる第１の波長可変光源（２４）を具備する第１の送信装置（２２）と、第１の受信装置（３０）と、当該第１の送信装置（２２）の出力する下り光の、当該反射器（４４）による第１の反射光を受光する第１の受光器（３２）と、当該第１の送信装置（２２）の出力する下り光を当該第１のＷＤＭカプラ（２８）に供給し、当該第１のＷＤＭカプラ（２８）からの、当該第１の反射光を当該第１の受光器（３２）に供給する第１の光カプラ（２６）と、当該第１の受光器（３２）により受光される当該反射光のレベルに応じて、当該第１の反射光のレベルが所定値以上になるように当該第１の波長可変光源の波長を制御する第１の制御装置（３４）とを具備する
ことを特徴とする光伝送システム。 An optical transmission line (40);
A plurality of first optical transceivers (12-1 to 12-n) that use different upstream and downstream wavelengths;
A plurality of second optical transceivers (50-1 to 50-n) communicating with the plurality of first optical transceivers;
First, the downstream light output from the plurality of first optical transmission / reception devices is wavelength-multiplexed, and the multiplexed upstream light from the optical transmission path is wavelength-separated into upstream light directed to each of the first transmission / reception devices. 1 wavelength demultiplexing means (14)
And
The optical transmission line is
Downlink light that wavelength-multiplexes upstream light output from the plurality of second optical transmission / reception devices, and that transmits the downstream light multiplexed by the first wavelength demultiplexing means to each of the plurality of second transmission / reception devices. Second wavelength demultiplexing means (4 6 ) for wavelength separation into
Reflector (44) disposed between the first wavelength demultiplexing means and the second wavelength demultiplexing means
And
The first optical transmission / reception device demultiplexes all the downstream wavelengths used by the plurality of first optical transmission / reception devices and all the upstream wavelengths used by the plurality of first optical transmission / reception devices. WDM coupler (28), a first transmission device (22) including a first variable wavelength light source (24) serving as a signal light source, a first reception device (30), and the first transmission device The downstream light output from the first transmitter (22) and the first light receiver (32) that receives the first reflected light from the reflector (44) of the downstream light output from (22). A first optical coupler (supplied to the first WDM coupler (28) and supplying the first reflected light from the first WDM coupler (28) to the first light receiver (32). 26) and the level of the reflected light received by the first light receiver (32), An optical transmission system, wherein a level of the reflected light of said 1 comprises a first control unit (34) and controlling the wavelength of the first wavelength-tunable light source to be equal to or greater than the predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010147140A JP2012015577A (en) | 2010-06-29 | 2010-06-29 | Optical transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010147140A JP2012015577A (en) | 2010-06-29 | 2010-06-29 | Optical transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2012015577A JP2012015577A (en) | 2012-01-19 |
| JP2012015577A5 true JP2012015577A5 (en) | 2013-04-18 |
Family
ID=45601547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010147140A Pending JP2012015577A (en) | 2010-06-29 | 2010-06-29 | Optical transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2012015577A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6499516B2 (en) * | 2015-06-02 | 2019-04-10 | 日本電信電話株式会社 | Optical transmission / reception system |
| JP2020098987A (en) * | 2018-12-17 | 2020-06-25 | 富士通株式会社 | Optical transmission device, wavelength setting method, and optical transceiver |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100547709B1 (en) * | 2003-07-07 | 2006-01-31 | 삼성전자주식회사 | Self-Healing Wavelength Division Multiplexing Passive Optical Subscriber Network |
| JP4672273B2 (en) * | 2004-03-24 | 2011-04-20 | 富士通株式会社 | WDM optical transmission system and transmission wavelength control method therefor |
-
2010
- 2010-06-29 JP JP2010147140A patent/JP2012015577A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2009012419A3 (en) | Optical wavelength-division-multiplexed (wdm) comb generator using a single laser | |
| WO2008018978A3 (en) | Optical communication system | |
| EP2728778A3 (en) | Transmission device and transmission method | |
| NZ586151A (en) | System and apparatus for a high perfomance gigabit passive optical network | |
| WO2011110126A3 (en) | Self-injection optical transmitting and receiving module and wavelength division multiplexing passive optical network system | |
| MX2012000366A (en) | Communication system and method for directly transmitting signals between nodes of a communication system. | |
| EP2391039A3 (en) | Tunable multi-wavelength optical transmitter and transceiver for optical communications based on wavelength division multiplexing | |
| WO2015040484A3 (en) | Onu and remote node for supporting inter-onu internetworking | |
| WO2012161553A3 (en) | Wavelength-division multiplexing optical communication system and method for measuring optical performance of an output signal for the system | |
| EP2390971A3 (en) | Tunable multi-wavelength semiconductor laser array for optical communications based on wavelength division multiplexing | |
| WO2010093195A3 (en) | Low-noise optical signal transmitter with low-noise multi-wavelength light source, broadcast signal transmitter using low-noise multi-wavelength light source, and optical network with the same | |
| WO2015187922A3 (en) | Monitoring and controlling temperature across a laser array in a transmitter optical subassembly (tosa) package | |
| EP2403172A3 (en) | Optical add drop multiplexer | |
| WO2015073733A3 (en) | Flexible grid twdm-pon architecture and intelligent set-up for twdm-pon | |
| WO2008118307A3 (en) | Periodically filtered broadband light source | |
| CN105451840A (en) | Optical time domain reflectometer implementation apparatus and system | |
| WO2010119981A3 (en) | Optical path switching signal transmission/reception apparatus and corresponding method | |
| EP2475119A4 (en) | Wavelength division multiplexing filter | |
| EP2487820A3 (en) | Optical transmission device and optical filter circuit | |
| WO2007120708A3 (en) | Optical multiplexer and transmitter | |
| RU2013150135A (en) | CENTRAL COMMUNICATION SYSTEM ASSEMBLY, WIRELESS COMMUNICATION SYSTEM, OPTICAL MULTIPLEXOR / DEMULTIPLEXOR DEVICE AND METHOD FOR TRANSFERING DATA TO ONE OR MULTIPLE GROUP OF NODES | |
| US8861965B2 (en) | Optical transmission apparatus | |
| JP2012015577A5 (en) | ||
| JP2014079013A5 (en) | ||
| WO2011133254A3 (en) | Roadm transponder aggregator systems and methods of operation |