JPS55115008A - Semiconductor laser coupler - Google Patents
Semiconductor laser couplerInfo
- 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
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
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)
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)
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 |
-
1979
- 1979-02-27 JP JP2139379A patent/JPS55115008A/en active Granted
Cited By (5)
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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