JPS5728391A - Optical semiconductor device - Google Patents

Optical semiconductor device

Info

Publication number
JPS5728391A
JPS5728391A JP10396080A JP10396080A JPS5728391A JP S5728391 A JPS5728391 A JP S5728391A JP 10396080 A JP10396080 A JP 10396080A JP 10396080 A JP10396080 A JP 10396080A JP S5728391 A JPS5728391 A JP S5728391A
Authority
JP
Japan
Prior art keywords
film
optical fiber
cleavage
plane
spherical section
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
JP10396080A
Other languages
Japanese (ja)
Inventor
Kiyoshi Hanamitsu
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 JP10396080A priority Critical patent/JPS5728391A/en
Publication of JPS5728391A publication Critical patent/JPS5728391A/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
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Semiconductor Lasers (AREA)

Abstract

PURPOSE:To obtain the small cheap optical semiconductor device with an external reflector by utilizing an existing optical fiber by a method wherein a spherical section is formed at one end of the optical fiber with fixed length and a semilight transmitting film at the other end, and a light emitting surface of the semiconductor laser device is approached and opposed to the spherical section. CONSTITUTION:A high reflection film, where a quarter wavelength film of Al2O3 is formed in six layers as Si and reflexibility thereof is 98% or higher, is shaped on a plane of cleavage 1s of the semiconductor laser 1, and an antireflection film, reflexibility thereof is made approximately 0.1% by a SiO2 film, thickness thereof is made 1,000Angstrom , and a Si3N4 film, thickness thereof is made 800Angstrom , is formed on a plane of cleavage 1s' opposing to the high reflection film. The optical fiber 4, which is multiple-mode optical fiber, a core diameter thereof is 60mum and NA thereof is 0.2, the length in the optical axis direction of a tapered section 4C thereof is 400mum and the radius of curvature of the spherical section 4A thereof is approximately 30mum, is approached and opposed to the plane of cleavage 1s' of the semiconductor lasre 1, and light projected into the optical fiber 4 is made approximately 85% or higher.
JP10396080A 1980-07-29 1980-07-29 Optical semiconductor device Pending JPS5728391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10396080A JPS5728391A (en) 1980-07-29 1980-07-29 Optical semiconductor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10396080A JPS5728391A (en) 1980-07-29 1980-07-29 Optical semiconductor device

Publications (1)

Publication Number Publication Date
JPS5728391A true JPS5728391A (en) 1982-02-16

Family

ID=14367951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10396080A Pending JPS5728391A (en) 1980-07-29 1980-07-29 Optical semiconductor device

Country Status (1)

Country Link
JP (1) JPS5728391A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59210684A (en) * 1983-05-16 1984-11-29 Toshiba Corp Semiconductor laser
JPS6164182A (en) * 1984-09-05 1986-04-02 Matsushita Electric Ind Co Ltd Optical feedback type semiconductor laser device
US9564778B2 (en) 2009-03-03 2017-02-07 Dyson Technologies Limited Stator core

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59210684A (en) * 1983-05-16 1984-11-29 Toshiba Corp Semiconductor laser
JPS6357955B2 (en) * 1983-05-16 1988-11-14 Tokyo Shibaura Electric Co
JPS6164182A (en) * 1984-09-05 1986-04-02 Matsushita Electric Ind Co Ltd Optical feedback type semiconductor laser device
US9564778B2 (en) 2009-03-03 2017-02-07 Dyson Technologies Limited Stator core

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