JPS6172950U - - Google Patents

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Publication number
JPS6172950U
JPS6172950U JP1984156579U JP15657984U JPS6172950U JP S6172950 U JPS6172950 U JP S6172950U JP 1984156579 U JP1984156579 U JP 1984156579U JP 15657984 U JP15657984 U JP 15657984U JP S6172950 U JPS6172950 U JP S6172950U
Authority
JP
Japan
Prior art keywords
stage before
frequency multiplexing
signal
circuit
multiplex
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
Application number
JP1984156579U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP1984156579U priority Critical patent/JPS6172950U/ja
Publication of JPS6172950U publication Critical patent/JPS6172950U/ja
Pending legal-status Critical Current

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  • Transmitters (AREA)
  • Optical Communication System (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の周波数多重送信装置の構成図、
第２図は周波数多重信号のスペクトルの一例、第
３図は電気・光変換に使われる特性線図、第４図
は本考案の一実施例を示す構成図、第５図は他の
実施例の構成図、第６図は周波数多重信号のスペ
クトルの他の例である。 ２０…チユーナ部、２１…キヤリアレベル検知
器、２２…自動利得調整器、２３…同期検知器、
２４…ミユーテイング回路、２５…周波数多重濾
波器、２６…データ信号部、２７…電気・光変換
部、２８…光伝送路、２９，３０…信号源、３１
，３２…ミユーテイング、３３…周波数多重濾波
器、３４…電気・光変換部、３５…光伝送路。 Figure 1 is a configuration diagram of a conventional frequency multiplexing transmitter.
Fig. 2 is an example of the spectrum of a frequency multiplexed signal, Fig. 3 is a characteristic diagram used for electrical-to-optical conversion, Fig. 4 is a block diagram showing one embodiment of the present invention, and Fig. 5 is another embodiment. FIG. 6 is another example of the spectrum of the frequency multiplexed signal. 20... Tuner unit, 21... Carrier level detector, 22... Automatic gain adjuster, 23... Synchronization detector,
24... Muting circuit, 25... Frequency multiplexing filter, 26... Data signal section, 27... Electrical/optical conversion section, 28... Optical transmission line, 29, 30... Signal source, 31
, 32... Muting, 33... Frequency multiplexing filter, 34... Electrical/optical converter, 35... Optical transmission line.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 多信号を周波数多重し、電気・光変換を行なう
ものにおいて、周波数多重する前段にミユーテイ
ング回路を付設し、信号源が劣化した時、上記ミ
ユーテイング回路を働かせて、周波数多重の前段
で信号ラインを遮断するように構成したことを特
徴とする多重信号光送信装置。 In devices that frequency multiplex multiple signals and perform electrical/optical conversion, a muting circuit is attached to the stage before frequency multiplexing, and when the signal source deteriorates, the mutating circuit is activated to cut off the signal line at the stage before frequency multiplexing. A multiplex signal optical transmitter characterized in that it is configured to:
JP1984156579U 1984-10-16 1984-10-16 Pending JPS6172950U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984156579U JPS6172950U (en) 1984-10-16 1984-10-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984156579U JPS6172950U (en) 1984-10-16 1984-10-16

Publications (1)

Publication Number Publication Date
JPS6172950U true JPS6172950U (en) 1986-05-17

Family

ID=30714584

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984156579U Pending JPS6172950U (en) 1984-10-16 1984-10-16

Country Status (1)

Country Link
JP (1) JPS6172950U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53138605A (en) * 1977-05-10 1978-12-04 Nec Corp Optical communication device
JPS57207456A (en) * 1981-06-17 1982-12-20 Fujitsu Ltd Input signal interruption detecting circuit in relay device for digital signal transmission line

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53138605A (en) * 1977-05-10 1978-12-04 Nec Corp Optical communication device
JPS57207456A (en) * 1981-06-17 1982-12-20 Fujitsu Ltd Input signal interruption detecting circuit in relay device for digital signal transmission line

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