JPS57204517A - Optical heterodyne detector - Google Patents

Optical heterodyne detector

Info

Publication number
JPS57204517A
JPS57204517A JP56090266A JP9026681A JPS57204517A JP S57204517 A JPS57204517 A JP S57204517A JP 56090266 A JP56090266 A JP 56090266A JP 9026681 A JP9026681 A JP 9026681A JP S57204517 A JPS57204517 A JP S57204517A
Authority
JP
Japan
Prior art keywords
omega0
optical
omega1
omega2
heterodyne detector
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
JP56090266A
Other languages
Japanese (ja)
Other versions
JPS6146812B2 (en
Inventor
Tatsuo Mori
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56090266A priority Critical patent/JPS57204517A/en
Publication of JPS57204517A publication Critical patent/JPS57204517A/en
Publication of JPS6146812B2 publication Critical patent/JPS6146812B2/ja
Granted 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
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
    • G02F2/002—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light using optical mixing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To enable one optical heterodyne detector to receive light signal of various frequencies from numbers of optical transmitters, by using optical fibers. CONSTITUTION:The light emission end parts of optical fibers 11, 12 and 13 are bundled by a fixture 16, and a fiber fixing tool 14 is used to arrange a photodetecting element 15 opposite to the light emission end parts. Then, the photodetecting elements extracts all best signals. When reference light of frequency omega0 is sent through the optical fiber and light signals of frequencies omega1 and omega2 are sent through the optical fibers 12 and 13, an optical heterodyne detector detects a DC component and components having frequencies¦omega1-omega2¦,¦omega0-omega1¦, and¦omega0-omega2¦through the photodetecting elements 15, and filters extract signals having components¦omega0-omega1¦and¦omega0-omega2¦.
JP56090266A 1981-06-12 1981-06-12 Optical heterodyne detector Granted JPS57204517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56090266A JPS57204517A (en) 1981-06-12 1981-06-12 Optical heterodyne detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56090266A JPS57204517A (en) 1981-06-12 1981-06-12 Optical heterodyne detector

Publications (2)

Publication Number Publication Date
JPS57204517A true JPS57204517A (en) 1982-12-15
JPS6146812B2 JPS6146812B2 (en) 1986-10-16

Family

ID=13993696

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56090266A Granted JPS57204517A (en) 1981-06-12 1981-06-12 Optical heterodyne detector

Country Status (1)

Country Link
JP (1) JPS57204517A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2514073A (en) * 2010-09-09 2014-11-19 Univ Dublin City An optical measurement method and system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0354332U (en) * 1989-09-30 1991-05-27

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2514073A (en) * 2010-09-09 2014-11-19 Univ Dublin City An optical measurement method and system

Also Published As

Publication number Publication date
JPS6146812B2 (en) 1986-10-16

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