JPS5693444A - Laser beam transmission device - Google Patents
Laser beam transmission deviceInfo
- Publication number
- JPS5693444A JPS5693444A JP17370379A JP17370379A JPS5693444A JP S5693444 A JPS5693444 A JP S5693444A JP 17370379 A JP17370379 A JP 17370379A JP 17370379 A JP17370379 A JP 17370379A JP S5693444 A JPS5693444 A JP S5693444A
- Authority
- JP
- Japan
- Prior art keywords
- output
- driving circuit
- signal
- laser diode
- mode noise
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
PURPOSE:To modulate the analogue signal directly without the premodulating circuit, by providing the interference eliminator which eliminates nonlinear distortion and mode noise included in the light output of the laser diode. CONSTITUTION:Analogue signal input (a) is applied to laser diode (LD) driving circuit 1, and this LS driving circuit 1 drives LD2 to output a optical signal corresponding to analogue signal input (a). This output signal is received by photodiode 4 and is converted to an electric signal and is amplified by APC amplifier 3 and is fed back to LD driving circuit 1, thereby performing automatic phase control. Then, the output optical signal of LD2 has nonlinear distortion and mode noise eliminated by interference eliminator 5 using rod glass and is transmitted to optical fiber cord 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54173703A JPS5928302B2 (en) | 1979-12-26 | 1979-12-26 | Laser light transmission equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54173703A JPS5928302B2 (en) | 1979-12-26 | 1979-12-26 | Laser light transmission equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5693444A true JPS5693444A (en) | 1981-07-29 |
JPS5928302B2 JPS5928302B2 (en) | 1984-07-12 |
Family
ID=15965553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54173703A Expired JPS5928302B2 (en) | 1979-12-26 | 1979-12-26 | Laser light transmission equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5928302B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6373901A (en) * | 1986-09-16 | 1988-04-04 | 株式会社 パテイネ商会 | Shoes |
-
1979
- 1979-12-26 JP JP54173703A patent/JPS5928302B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5928302B2 (en) | 1984-07-12 |
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