DE3775327D1 - Verbesserungen an uebertragungssystemen. - Google Patents

Verbesserungen an uebertragungssystemen.

Info

Publication number
DE3775327D1
DE3775327D1 DE8787901579T DE3775327T DE3775327D1 DE 3775327 D1 DE3775327 D1 DE 3775327D1 DE 8787901579 T DE8787901579 T DE 8787901579T DE 3775327 T DE3775327 T DE 3775327T DE 3775327 D1 DE3775327 D1 DE 3775327D1
Authority
DE
Germany
Prior art keywords
signal
fed
optical
received
directional
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
Application number
DE8787901579T
Other languages
English (en)
Inventor
Antony Wade
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roke Manor Research Ltd
Original Assignee
Roke Manor Research Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Roke Manor Research Ltd filed Critical Roke Manor Research Ltd
Application granted granted Critical
Publication of DE3775327D1 publication Critical patent/DE3775327D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • 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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2589—Bidirectional transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
    • H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation
DE8787901579T 1986-03-11 1987-03-11 Verbesserungen an uebertragungssystemen. Expired - Fee Related DE3775327D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8605964A GB2192108B (en) 1986-03-11 1986-03-11 Improvements relating to communication systems
PCT/GB1987/000167 WO1987005761A1 (en) 1986-03-11 1987-03-11 Improvements relating to communication systems

Publications (1)

Publication Number Publication Date
DE3775327D1 true DE3775327D1 (de) 1992-01-30

Family

ID=10594374

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787901579T Expired - Fee Related DE3775327D1 (de) 1986-03-11 1987-03-11 Verbesserungen an uebertragungssystemen.

Country Status (5)

Country Link
EP (1) EP0263845B1 (de)
AT (1) ATE70678T1 (de)
DE (1) DE3775327D1 (de)
GB (1) GB2192108B (de)
WO (1) WO1987005761A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4021063A1 (de) * 1990-07-03 1992-01-09 Boehringer Mannheim Gmbh Neue ss-galactosidase-substrate fuer den cedia
JPH04310037A (ja) * 1991-04-09 1992-11-02 Nec Corp Ｆｓｋ受信機
GB9315431D0 (en) * 1993-07-26 1993-09-08 Plessey Telecomm Optical communication system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510846A1 (fr) * 1981-07-31 1983-02-04 Trt Telecom Radio Electr Dispositif de couplage d'un emetteur et d'un recepteur de rayonnement a une extremite d'une fibre optique
GB2137836B (en) * 1983-04-06 1986-07-23 Multitone Electronics Plc Fm demodulators

Also Published As

Publication number Publication date
EP0263845B1 (de) 1991-12-18
EP0263845A1 (de) 1988-04-20
GB2192108B (en) 1989-11-08
GB8605964D0 (en) 1986-04-16
ATE70678T1 (de) 1992-01-15
GB2192108A (en) 1987-12-31
WO1987005761A1 (en) 1987-09-24

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee