JPS55115008A - Semiconductor laser coupler - Google Patents

Semiconductor laser coupler

Info

Publication number
JPS55115008A
JPS55115008A JP2139379A JP2139379A JPS55115008A JP S55115008 A JPS55115008 A JP S55115008A JP 2139379 A JP2139379 A JP 2139379A JP 2139379 A JP2139379 A JP 2139379A JP S55115008 A JPS55115008 A JP S55115008A
Authority
JP
Japan
Prior art keywords
semiconductor laser
laser
longitudinal mode
mode spacing
external resonator
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
JP2139379A
Other languages
Japanese (ja)
Other versions
JPS5719586B2 (en
Inventor
Masatoshi Saruwatari
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 JP2139379A priority Critical patent/JPS55115008A/en
Publication of JPS55115008A publication Critical patent/JPS55115008A/en
Publication of JPS5719586B2 publication Critical patent/JPS5719586B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To improve transmission characteristic by using an external resonator which has the specific longitudinal mode spacing.
CONSTITUTION: The inter-end-face distance of a semiconductor laser 1 and an optical fiber 5 is made about 100μmW300μm and a cylindrical lens or spherical lens 3 of about 10W50μm in diameter is disposed therebetween. A reflecting film 9 of about 10W30% in laser light reflectance is directly bonded to the incident end face of the optical fiber 5 to constitute the external resonator having the longitudinal mode spacing several times the longitudinal mode spacing of the semiconductor laser 1. Thereby, the longitudinal modes of the laser body and the external resonator overlaps near the peak value of the gain of the semiconductor laser 1 and this results in the increased Q value of the resonator in wavelength, easier generation of laser oscillation, stable and single spectral characteristic of the semiconductor laser 1 and sufficiently decreased degradation of the transmission characteristics owing to spectrum spreading.
COPYRIGHT: (C)1980,JPO&Japio
JP2139379A 1979-02-27 1979-02-27 Semiconductor laser coupler Granted JPS55115008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2139379A JPS55115008A (en) 1979-02-27 1979-02-27 Semiconductor laser coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2139379A JPS55115008A (en) 1979-02-27 1979-02-27 Semiconductor laser coupler

Publications (2)

Publication Number Publication Date
JPS55115008A true JPS55115008A (en) 1980-09-04
JPS5719586B2 JPS5719586B2 (en) 1982-04-23

Family

ID=12053810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2139379A Granted JPS55115008A (en) 1979-02-27 1979-02-27 Semiconductor laser coupler

Country Status (1)

Country Link
JP (1) JPS55115008A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4812005A (en) * 1985-09-24 1989-03-14 Siemens Aktiengesellschaft Arrangement for coupling a laser diode and a monomode light waveguide having a feedback means
JPH0244042U (en) * 1988-09-22 1990-03-27
KR100775413B1 (en) 2006-04-06 2007-11-12 한국정보통신대학교 산학협력단 Single mode light source device having external cavity
JP2011108682A (en) * 2009-11-12 2011-06-02 Anritsu Corp External resonator-type semiconductor laser and raman amplifier using the same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6154085A (en) * 1984-08-24 1986-03-18 Matsushita Electric Ind Co Ltd Tape cassette
JPH025186U (en) * 1988-06-17 1990-01-12
JPH07287961A (en) * 1994-04-19 1995-10-31 Yoshitaka Tanaka Simple device for confirming rotation of tape cassette

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4812005A (en) * 1985-09-24 1989-03-14 Siemens Aktiengesellschaft Arrangement for coupling a laser diode and a monomode light waveguide having a feedback means
JPH0244042U (en) * 1988-09-22 1990-03-27
JPH0647726Y2 (en) * 1988-09-22 1994-12-07 セイコーエプソン株式会社 Wire dot head
KR100775413B1 (en) 2006-04-06 2007-11-12 한국정보통신대학교 산학협력단 Single mode light source device having external cavity
JP2011108682A (en) * 2009-11-12 2011-06-02 Anritsu Corp External resonator-type semiconductor laser and raman amplifier using the same

Also Published As

Publication number Publication date
JPS5719586B2 (en) 1982-04-23

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