DE69213348D1 - Frequenzdiskriminator und Überlagerungsempfänger ausgestattet mit diesem Frequenzdiskriminator zur kohärenten Lichtübertragung - Google Patents
Frequenzdiskriminator und Überlagerungsempfänger ausgestattet mit diesem Frequenzdiskriminator zur kohärenten LichtübertragungInfo
- Publication number
- DE69213348D1 DE69213348D1 DE69213348T DE69213348T DE69213348D1 DE 69213348 D1 DE69213348 D1 DE 69213348D1 DE 69213348 T DE69213348 T DE 69213348T DE 69213348 T DE69213348 T DE 69213348T DE 69213348 D1 DE69213348 D1 DE 69213348D1
- Authority
- DE
- Germany
- Prior art keywords
- frequency discriminator
- light transmission
- coherent light
- heterodyne receiver
- receiver equipped
- 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 - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 title 1
- 230000001427 coherent effect Effects 0.000 title 1
Classifications
-
- 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
- H04B10/60—Receivers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
- H03D3/22—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of active elements with more than two electrodes to which two signals are applied derived from the signal to be demodulated and having a phase difference related to the frequency deviation, e.g. phase detector
-
- 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
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
- H04B10/64—Heterodyne, i.e. coherent receivers where, after the opto-electronic conversion, an electrical signal at an intermediate frequency [IF] is obtained
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D9/00—Demodulation or transference of modulation of modulated electromagnetic waves
- H03D9/02—Demodulation using distributed inductance and capacitance, e.g. in feeder lines
- H03D9/04—Demodulation using distributed inductance and capacitance, e.g. in feeder lines for angle-modulated oscillations
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Optical Communication System (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3148823A JP2798526B2 (ja) | 1991-06-20 | 1991-06-20 | 周波数弁別器 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE69213348D1 true DE69213348D1 (de) | 1996-10-10 |
Family
ID=15461524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69213348T Expired - Lifetime DE69213348D1 (de) | 1991-06-20 | 1992-06-19 | Frequenzdiskriminator und Überlagerungsempfänger ausgestattet mit diesem Frequenzdiskriminator zur kohärenten Lichtübertragung |
Country Status (5)
Country | Link |
---|---|
US (1) | US5568305A (de) |
EP (1) | EP0519491B1 (de) |
JP (1) | JP2798526B2 (de) |
CA (1) | CA2071624C (de) |
DE (1) | DE69213348D1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3482088B2 (ja) * | 1996-12-05 | 2003-12-22 | 松下電器産業株式会社 | 周波数変調装置 |
JP4184474B2 (ja) * | 1997-08-22 | 2008-11-19 | 松下電器産業株式会社 | 光伝送システムならびにそれに用いられる光送信装置および光受信装置 |
EP0959571B1 (de) * | 1998-10-22 | 2001-08-29 | Contraves Space AG | Vorrichtung für den homodynen Empfang optischer phasenumgetasteter Signale |
US6970250B1 (en) * | 2000-01-20 | 2005-11-29 | Agilent Technologies, Inc. | Method and system for optical heterodyne detection of an optical signal that utilizes optical attenuation |
WO2009090801A1 (ja) * | 2008-01-15 | 2009-07-23 | Nagasaki University, National University Corporation | 周波数検出装置、周波数検出方法、電気回路制御装置、電気回路制御方法、遅延回路および遅延回路システム |
US7847597B1 (en) * | 2009-06-15 | 2010-12-07 | The Aerospace Corporation | Precision frequency change detector |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3909725A (en) * | 1957-03-29 | 1975-09-30 | Massachusetts Inst Technology | Frequency modulation receiver |
US3482099A (en) * | 1965-08-16 | 1969-12-02 | Hughes Aircraft Co | Tuned stable laser in a communication system |
US3795447A (en) * | 1970-06-29 | 1974-03-05 | R Ray | Laser anemometer frequency to d.c. converter |
US3696298A (en) * | 1970-07-27 | 1972-10-03 | Kahn Res Lab | Audio signal transmission system and method |
JPS5583347A (en) * | 1978-12-20 | 1980-06-23 | Mitsubishi Electric Corp | Fm radio receiver |
JPS5643916U (de) * | 1979-09-13 | 1981-04-21 | ||
JPS56150734A (en) * | 1980-04-23 | 1981-11-21 | Nippon Telegr & Teleph Corp <Ntt> | Heterodyne receiver for optical communication using semiconductor laser |
US4321706A (en) * | 1980-07-14 | 1982-03-23 | John Fluke Mfg. Co., Inc. | Frequency modulated phase-locked loop signal source |
GB2144004A (en) * | 1983-07-25 | 1985-02-20 | Gen Electric | FM discriminator circuits |
GB2158330A (en) * | 1984-04-30 | 1985-11-06 | Philips Electronic Associated | An afc system for a direct modulation fm data receiver |
JPS61102804A (ja) * | 1984-10-25 | 1986-05-21 | Pioneer Electronic Corp | Fm検波回路 |
US4644297A (en) * | 1986-03-03 | 1987-02-17 | Motorola, Inc. | Frequency locked loop for the temperature compensation of phase coded surface acoustic wave devices |
JPS6297421A (ja) * | 1986-08-12 | 1987-05-06 | Nippon Gakki Seizo Kk | パルスfm検波回路 |
JPS63155907A (ja) * | 1986-12-19 | 1988-06-29 | Victor Co Of Japan Ltd | パルスカウントfm復調回路 |
JPH01185037A (ja) * | 1988-01-20 | 1989-07-24 | Hitachi Ltd | 光送信器,光受信器及び光伝送装置並びに光受信器の制御方法 |
US5274490A (en) * | 1988-01-20 | 1993-12-28 | Hitachi, Ltd. | Optical transmitter, optical receiver and optical transmission apparatus and control method of optical receiver |
JPH01129911U (de) * | 1988-02-26 | 1989-09-05 | ||
JPH01238307A (ja) * | 1988-03-18 | 1989-09-22 | Matsushita Electric Ind Co Ltd | Fm検波回路 |
JPH0239131A (ja) * | 1988-07-29 | 1990-02-08 | Hitachi Ltd | 周波数間隔安定化方法、光ヘテロダイン又は光ホモダイン通信方法 |
JP3070610B2 (ja) * | 1989-07-28 | 2000-07-31 | 株式会社日立製作所 | 光チューニング方法及び光チューニング装置並びに光周波数多重伝送装置 |
-
1991
- 1991-06-20 JP JP3148823A patent/JP2798526B2/ja not_active Expired - Lifetime
-
1992
- 1992-06-18 CA CA002071624A patent/CA2071624C/en not_active Expired - Fee Related
- 1992-06-19 EP EP92110362A patent/EP0519491B1/de not_active Expired - Lifetime
- 1992-06-19 DE DE69213348T patent/DE69213348D1/de not_active Expired - Lifetime
-
1995
- 1995-06-05 US US08/462,565 patent/US5568305A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2798526B2 (ja) | 1998-09-17 |
EP0519491A1 (de) | 1992-12-23 |
CA2071624A1 (en) | 1992-12-21 |
US5568305A (en) | 1996-10-22 |
JPH0548340A (ja) | 1993-02-26 |
CA2071624C (en) | 1998-09-29 |
EP0519491B1 (de) | 1996-09-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8332 | No legal effect for de |