JPS56147122A - Optical frequency modulator - Google Patents

Optical frequency modulator

Info

Publication number
JPS56147122A
JPS56147122A JP5025080A JP5025080A JPS56147122A JP S56147122 A JPS56147122 A JP S56147122A JP 5025080 A JP5025080 A JP 5025080A JP 5025080 A JP5025080 A JP 5025080A JP S56147122 A JPS56147122 A JP S56147122A
Authority
JP
Japan
Prior art keywords
directional couplers
light
modulated
electrooptical
elastic wave
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
JP5025080A
Other languages
Japanese (ja)
Inventor
Yoshihisa Yamamoto
Soichi Kobayashi
Akira Sugimura
Nobuyuki Imoto
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP5025080A priority Critical patent/JPS56147122A/en
Publication of JPS56147122A publication Critical patent/JPS56147122A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/295—Analog deflection from or in an optical waveguide structure]
    • G02F1/2955—Analog deflection from or in an optical waveguide structure] by controlled diffraction or phased-array beam steering

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

PURPOSE:To reduce the coupling loss between elements, by integrating the ultrasonic deflector and the directional coupler type modulator using the electrooptical effect. CONSTITUTION:In the device where the polarizer of the light wave due to the surface elastic wave and directional couplers, where the coupling degree is modulated by the electrooptical effect, are arranged in series on the electrooptical crystal, the diffraction efficiency of surface elastic wave deflector 1 is 50% approximately, and permeating light 3' and diffracted light 4 are connected to two optical waveguide lines constituting directional couplers 5 and 6 respectively. The coupling degree of directional couplers 5 and 6 is modulated by the electric field applied to electrodes 7 and 8.
JP5025080A 1980-04-18 1980-04-18 Optical frequency modulator Pending JPS56147122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5025080A JPS56147122A (en) 1980-04-18 1980-04-18 Optical frequency modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5025080A JPS56147122A (en) 1980-04-18 1980-04-18 Optical frequency modulator

Publications (1)

Publication Number Publication Date
JPS56147122A true JPS56147122A (en) 1981-11-14

Family

ID=12853732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5025080A Pending JPS56147122A (en) 1980-04-18 1980-04-18 Optical frequency modulator

Country Status (1)

Country Link
JP (1) JPS56147122A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2598823A1 (en) * 1986-05-16 1987-11-20 Ericsson Telefon Ab L M DIRECTIONAL OPTOELECTRONIC COUPLER FOR NON POLARIZED CONTROL SIGNAL.
US4832432A (en) * 1986-12-23 1989-05-23 U.S. Philips Corp. Optical switching element between two optical guides and optical switching matrix constituted by these switching elements

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2598823A1 (en) * 1986-05-16 1987-11-20 Ericsson Telefon Ab L M DIRECTIONAL OPTOELECTRONIC COUPLER FOR NON POLARIZED CONTROL SIGNAL.
US4842367A (en) * 1986-05-16 1989-06-27 Telefonaktiebolaget L M Ericsson Optoelectronic directional coupler for a bias-free control signal
US4832432A (en) * 1986-12-23 1989-05-23 U.S. Philips Corp. Optical switching element between two optical guides and optical switching matrix constituted by these switching elements

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