KR970024701A - 주파수 이동기를 이용한 의사등간격 다채널 주파수 발생장치 - Google Patents
주파수 이동기를 이용한 의사등간격 다채널 주파수 발생장치 Download PDFInfo
- Publication number
- KR970024701A KR970024701A KR1019950038259A KR19950038259A KR970024701A KR 970024701 A KR970024701 A KR 970024701A KR 1019950038259 A KR1019950038259 A KR 1019950038259A KR 19950038259 A KR19950038259 A KR 19950038259A KR 970024701 A KR970024701 A KR 970024701A
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- South Korea
- Prior art keywords
- frequency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0224—Irregular wavelength spacing, e.g. to accommodate interference to all wavelengths
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/03—WDM arrangements
- H04J14/0307—Multiplexers; Demultiplexers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
- H04B10/505—Laser transmitters using external modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/506—Multiwavelength transmitters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/572—Wavelength control
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
Description
Claims (3)
- 서로 다른 다수의 등간격 주파수의 광을 발생시키는 다채널 광원 수단(10); 상기 다채널 광원 수단(10)으로 부터 출력을 입력받아 2개의 광신호로 분할하여 출력하는 제1광커플러 수단(20); 등간격(△fc)주파수를 기본으로 하여 소정 주파수(△fsh)만큼씩 증가 또는 감소시키는 간격 주파수 체배 수단(70); 상기 제1광커플러 수단(20)의 출력과 상기 간격 주파수 체배 수단(70)의 출력을 입력받아 소정 주파수(△fsh)만큼씩 이동시키는 주파수 이동 수단(60); 상기 주파수 이동 수단(60)의 출력을 입력받아 외부의 신호에 의해 변조시키는 외부 변조 수단(80); 상기 외부 변조 수단(80)의 변조된 주파수들을 다중하여 전송하는 제2광커플러(90); 상기 제1광커플러 수단(20)의 다수의 출력을 입력받아 1개의 신호로 다중하여 출력하는 제3광커플러(30); 상기 제3광커플러(30)의 출력을 입력받아 등간격 주파수를 발생하는 기준 공진 수단(40); 및 상기 기준 공진 수단(40)의 출력을 입력받아 광출력의 변화를 검지하여 상기 다채널 광원 수단(10)의 인가 전류 및 온도를 조절하는 광 주파수 안정화 수단(50)을 구비한 것을 특징으로 하는 주파수 이동기를 이용한 의사등간격 다채널 주파수 발생장치.
- 제1항에 있어서, 상기 제1광커플러 수단(20)은, 다수의 1x2 광커플러로 구성된 것을 특징으로 하는 주파수 이동기를 이용한 의사등간격 다채널 주파수 발생장치.
- 제1항에 있어서, 상기 기준 공진 수단(40)은, 광섬유 파브리-페로(FFP:Fiber Fabry-Perot) 공진기로 구성된 것을 특징으로하는 주파수 이동기를 이용한 의사등간격 다채널 주파수 발생장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950038259A KR0153909B1 (ko) | 1995-10-30 | 1995-10-30 | 주파수 이동기를 이용한 의사등간격 다채널 주파수 발생장치 |
| US08/646,121 US5784170A (en) | 1995-10-30 | 1996-05-07 | Apparatus for generating quasi equally spaced frequencies using an optical frequency shifter in a multi-channel transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950038259A KR0153909B1 (ko) | 1995-10-30 | 1995-10-30 | 주파수 이동기를 이용한 의사등간격 다채널 주파수 발생장치 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970024701A true KR970024701A (ko) | 1997-05-30 |
| KR0153909B1 KR0153909B1 (ko) | 1998-11-16 |
Family
ID=19432025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950038259A Expired - Fee Related KR0153909B1 (ko) | 1995-10-30 | 1995-10-30 | 주파수 이동기를 이용한 의사등간격 다채널 주파수 발생장치 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5784170A (ko) |
| KR (1) | KR0153909B1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115308780A (zh) * | 2022-07-04 | 2022-11-08 | 和芯星通科技(北京)有限公司 | 基于频间伪距偏差补偿的多频伪距融合定位方法和装置 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7227835B2 (en) * | 2002-06-27 | 2007-06-05 | Thomson Licensing | Method and apparatus for adjacent channel interference reduction in an orthogonal frequency division multiplexing (OFDM) receiver |
| KR20140092687A (ko) * | 2013-01-16 | 2014-07-24 | 한국전자통신연구원 | 멀티 캐리어 생성기 제어장치 및 그 방법 |
| US9312914B2 (en) * | 2013-04-22 | 2016-04-12 | Fujitsu Limited | Crosstalk reduction in optical networks using variable subcarrier power levels |
| US9100137B2 (en) | 2013-04-22 | 2015-08-04 | Fujitsu Limited | Crosstalk reduction in optical networks using variable subcarrier spectral allocation |
| US9654223B2 (en) | 2015-04-23 | 2017-05-16 | Fujitsu Limited | Superchannel power pre-emphasis based on transmission criteria |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5365362A (en) * | 1993-09-10 | 1994-11-15 | At&T Bell Laboratories | Ultra-high capacity non-soliton optical transmission using optical phase conjugation |
| CA2139957C (en) * | 1994-02-18 | 1999-02-09 | Andrew R. Chraplyvy | Multi-channel optical fiber communication system |
| US5535051A (en) * | 1995-01-24 | 1996-07-09 | At&T Corp. | WDM optical fiber system using crystal optical amplifier |
-
1995
- 1995-10-30 KR KR1019950038259A patent/KR0153909B1/ko not_active Expired - Fee Related
-
1996
- 1996-05-07 US US08/646,121 patent/US5784170A/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115308780A (zh) * | 2022-07-04 | 2022-11-08 | 和芯星通科技(北京)有限公司 | 基于频间伪距偏差补偿的多频伪距融合定位方法和装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| US5784170A (en) | 1998-07-21 |
| KR0153909B1 (ko) | 1998-11-16 |
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