JPS57124492A - Coupler for semiconductor laser and optical fiber - Google Patents
Coupler for semiconductor laser and optical fiberInfo
- 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
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.
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)
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 |
-
1981
- 1981-01-26 JP JP1098581A patent/JPS57124492A/en active Pending
Cited By (1)
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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