JPS55156902A - Partly transmittable mirror channel-connecting photo switch having photodetector - Google Patents

Partly transmittable mirror channel-connecting photo switch having photodetector

Info

Publication number
JPS55156902A
JPS55156902A JP6396779A JP6396779A JPS55156902A JP S55156902 A JPS55156902 A JP S55156902A JP 6396779 A JP6396779 A JP 6396779A JP 6396779 A JP6396779 A JP 6396779A JP S55156902 A JPS55156902 A JP S55156902A
Authority
JP
Japan
Prior art keywords
call
photo switch
photodetector
partly
connecting photo
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.)
Granted
Application number
JP6396779A
Other languages
Japanese (ja)
Other versions
JPH02682B2 (en
Inventor
Hiroshi Nakamura
Naomasa Hanano
Tsutomu Fukugahara
Kazuo Iguchi
Masaaki Takahashi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP6396779A priority Critical patent/JPS55156902A/en
Publication of JPS55156902A publication Critical patent/JPS55156902A/en
Publication of JPH02682B2 publication Critical patent/JPH02682B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G02B6/3586—Control or adjustment details, e.g. calibrating
    • G02B6/3588—Control or adjustment details, e.g. calibrating of the processed beams, i.e. controlling during switching of orientation, alignment, or beam propagation properties such as intensity, size or shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G02B6/351—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements
    • G02B6/3512—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements the optical element being reflective, e.g. mirror
    • G02B6/3514—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements the optical element being reflective, e.g. mirror the reflective optical element moving along a line so as to translate into and out of the beam path, i.e. across the beam path
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
    • G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
    • G02B6/3546—NxM switch, i.e. a regular array of switches elements of matrix type constellation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Optical Communication System (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

PURPOSE:To readily detect the subscribers' first call and clearing call by incorporating photodetectors into the channel-connecting photo switch using partly transmittable mirrors. CONSTITUTION:Unless there is no first call from any subscriber 1, the channel- connecting photo switch 2 does not perform the connection of the X-row and Y- column and therefore mirrors 5 are held lowered by a control circuit 4. When any subscriber 1 taken up a receiver, the light signal of the first call is sent out and is sent to the connecting photo switch 2 by passing an optical fiber 3 and is input to a photodetector 7. Thence, the photodetector 7 converts the light signal of this first call to an electric signal and supplies the same to the control circuit 4. The control circuit 4 when supplied with this information raises the necessary mirror 5 to connect the X-row and Y-column. Since the partly transmittable mirrors are used for the connecting photo switch 2, the detectors 7 are able to receiver the light signals even if the X-row and Y-column are held connected and are able to detect the clearing call from the subscribers 1. In this way, the first call and clearing call may be readily detected.
JP6396779A 1979-05-25 1979-05-25 Partly transmittable mirror channel-connecting photo switch having photodetector Granted JPS55156902A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6396779A JPS55156902A (en) 1979-05-25 1979-05-25 Partly transmittable mirror channel-connecting photo switch having photodetector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6396779A JPS55156902A (en) 1979-05-25 1979-05-25 Partly transmittable mirror channel-connecting photo switch having photodetector

Publications (2)

Publication Number Publication Date
JPS55156902A true JPS55156902A (en) 1980-12-06
JPH02682B2 JPH02682B2 (en) 1990-01-09

Family

ID=13244568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6396779A Granted JPS55156902A (en) 1979-05-25 1979-05-25 Partly transmittable mirror channel-connecting photo switch having photodetector

Country Status (1)

Country Link
JP (1) JPS55156902A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4381881A (en) * 1980-05-27 1983-05-03 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Fiber optic crossbar switch for automatically patching optical signals
EP0089238A2 (en) * 1982-03-16 1983-09-21 Unisys Corporation Molded optical keyboard having fiber optic keys
JPS6051342A (en) * 1983-08-31 1985-03-22 Fujitsu Ltd Optical communication system between processors
FR2602595A1 (en) * 1986-08-06 1988-02-12 Cit Alcatel Optical switch for maintaining and automatically safeguarding multimode optical links
US7400790B2 (en) 2004-11-03 2008-07-15 Hewlett-Packard Development Company, L.P. Optical connections and methods of forming optical connections

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4934214A (en) * 1972-07-28 1974-03-29
JPS5535366A (en) * 1978-09-06 1980-03-12 Nippon Telegr & Teleph Corp <Ntt> Photo switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4934214A (en) * 1972-07-28 1974-03-29
JPS5535366A (en) * 1978-09-06 1980-03-12 Nippon Telegr & Teleph Corp <Ntt> Photo switch

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4381881A (en) * 1980-05-27 1983-05-03 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Fiber optic crossbar switch for automatically patching optical signals
EP0089238A2 (en) * 1982-03-16 1983-09-21 Unisys Corporation Molded optical keyboard having fiber optic keys
JPS6051342A (en) * 1983-08-31 1985-03-22 Fujitsu Ltd Optical communication system between processors
FR2602595A1 (en) * 1986-08-06 1988-02-12 Cit Alcatel Optical switch for maintaining and automatically safeguarding multimode optical links
US7400790B2 (en) 2004-11-03 2008-07-15 Hewlett-Packard Development Company, L.P. Optical connections and methods of forming optical connections
US7693362B2 (en) 2004-11-03 2010-04-06 Hewlett-Packard Development Company, L.P. Optical connections and methods of forming optical connections
US8059927B2 (en) 2004-11-03 2011-11-15 Hewlett-Packard Development Company, L.P. Optical connections and methods of forming optical connections

Also Published As

Publication number Publication date
JPH02682B2 (en) 1990-01-09

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