JPS57124492A - Coupler for semiconductor laser and optical fiber - Google Patents

Coupler for semiconductor laser and optical fiber

Info

Publication number
JPS57124492A
JPS57124492A JP1098581A JP1098581A JPS57124492A JP S57124492 A JPS57124492 A JP S57124492A JP 1098581 A JP1098581 A JP 1098581A JP 1098581 A JP1098581 A JP 1098581A JP S57124492 A JPS57124492 A JP S57124492A
Authority
JP
Japan
Prior art keywords
laser
optical fiber
semiconductor laser
beams
reflector
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
JP1098581A
Other languages
Japanese (ja)
Inventor
Teruhito Matsui
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1098581A priority Critical patent/JPS57124492A/en
Publication of JPS57124492A publication Critical patent/JPS57124492A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
    • H01S3/1068—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using an acousto-optical device

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Semiconductor Lasers (AREA)

Abstract

PURPOSE:To reduce speckle noises by inserting an elastic surface wave element between the semiconductor laser and a reflector and coupling beams from the other side of the semiconductor laser with the optical fiber. CONSTITUTION:The output beams to the reverse side to the optical fiber 7 of the semiconductor laser 1 oscillating at a single wavelength are coupled with the reflector 6 through a lens 2. A transparent piezo-electric substrate 3 with a reed screen-shaped electrode 4 is inserted between the lens 2 and the reflector 6 at that time. When voltage is applied to the electrode 4 by a high-frequency power supply circuit 5, elastic surface waves are generated. When laser beams are transmitted to the substrate 3 where the elastic surface waves are generated, the phase of the laser beams is modulated. Accordingly, the laser 1 oscillating originally at a single wavelength is oscillated at a large number of stable wavelengths, and the speckle noises are reduced when the output beams of the laser 1 are combined with the optical fiber 7.
JP1098581A 1981-01-26 1981-01-26 Coupler for semiconductor laser and optical fiber Pending JPS57124492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1098581A JPS57124492A (en) 1981-01-26 1981-01-26 Coupler for semiconductor laser and optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1098581A JPS57124492A (en) 1981-01-26 1981-01-26 Coupler for semiconductor laser and optical fiber

Publications (1)

Publication Number Publication Date
JPS57124492A true JPS57124492A (en) 1982-08-03

Family

ID=11765439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1098581A Pending JPS57124492A (en) 1981-01-26 1981-01-26 Coupler for semiconductor laser and optical fiber

Country Status (1)

Country Link
JP (1) JPS57124492A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01225914A (en) * 1988-03-07 1989-09-08 Anritsu Corp Rear reflecting type surface acoustic wave optical modulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01225914A (en) * 1988-03-07 1989-09-08 Anritsu Corp Rear reflecting type surface acoustic wave optical modulator

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