JPS5488136A - Optical branching filter for optical fibers - Google Patents

Optical branching filter for optical fibers

Info

Publication number
JPS5488136A
JPS5488136A JP15570277A JP15570277A JPS5488136A JP S5488136 A JPS5488136 A JP S5488136A JP 15570277 A JP15570277 A JP 15570277A JP 15570277 A JP15570277 A JP 15570277A JP S5488136 A JPS5488136 A JP S5488136A
Authority
JP
Japan
Prior art keywords
light
signal
film
incident
reflecting
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
JP15570277A
Other languages
Japanese (ja)
Inventor
Takao Ito
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15570277A priority Critical patent/JPS5488136A/en
Publication of JPS5488136A publication Critical patent/JPS5488136A/en
Pending legal-status Critical Current

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Landscapes

  • Optical Communication System (AREA)

Abstract

PURPOSE: To branch and draw out the light signal in transmission line as an electric signal with a simple constitution by providing a reflecting-transmitting film on a light focuing concave mirror and letting part of incident light be reflected thereby.
CONSTITUTION: Light signal incident to a focusing optical system 1 of self-focusing type from an optical fiber 3 reflects on the reflecting-transmitting film 2 which reflects or transmits specific wavelength light provided to the concave mirror of the optical system 1 and propagates in a branch optical fiber 4. Part of said incident signal transmits through the film 2 and is converted to an electric signal by a photoelectric transducer 5, thus the light signal in the transmission line may be drawn out as the electric signal without any loss with the simple constitution. The similar results may also be obtained even if a full reflecting film having a light transmission part in part thereof is used as the relfecting-transmitting film.
COPYRIGHT: (C)1979,JPO&Japio
JP15570277A 1977-12-26 1977-12-26 Optical branching filter for optical fibers Pending JPS5488136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15570277A JPS5488136A (en) 1977-12-26 1977-12-26 Optical branching filter for optical fibers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15570277A JPS5488136A (en) 1977-12-26 1977-12-26 Optical branching filter for optical fibers

Publications (1)

Publication Number Publication Date
JPS5488136A true JPS5488136A (en) 1979-07-13

Family

ID=15611641

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15570277A Pending JPS5488136A (en) 1977-12-26 1977-12-26 Optical branching filter for optical fibers

Country Status (1)

Country Link
JP (1) JPS5488136A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5863914A (en) * 1981-09-28 1983-04-16 カプトロン・インコ−ポレ−テツド Optical fiber communication equipment
JPS58129844A (en) * 1982-01-27 1983-08-03 Toshiba Corp Optical demultiplexer
JPS63316809A (en) * 1987-06-19 1988-12-26 Mitsubishi Electric Corp Optical branching device
JPH01154005A (en) * 1987-12-10 1989-06-16 Mitsubishi Electric Corp Optical branching device
JPH0244704U (en) * 1988-09-21 1990-03-28
US4993796A (en) * 1979-08-14 1991-02-19 Kaptron, Inc. Fiber optics communication modules

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993796A (en) * 1979-08-14 1991-02-19 Kaptron, Inc. Fiber optics communication modules
JPS5863914A (en) * 1981-09-28 1983-04-16 カプトロン・インコ−ポレ−テツド Optical fiber communication equipment
JPH0478973B2 (en) * 1981-09-28 1992-12-14 Kaputoron Inc
JPS58129844A (en) * 1982-01-27 1983-08-03 Toshiba Corp Optical demultiplexer
JPS63316809A (en) * 1987-06-19 1988-12-26 Mitsubishi Electric Corp Optical branching device
JPH01154005A (en) * 1987-12-10 1989-06-16 Mitsubishi Electric Corp Optical branching device
JPH0544003B2 (en) * 1987-12-10 1993-07-05 Mitsubishi Electric Corp
JPH0244704U (en) * 1988-09-21 1990-03-28

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