JPS5760762A - Asynchronous high-speed digital optical communication system - Google Patents
Asynchronous high-speed digital optical communication systemInfo
- Publication number
- JPS5760762A JPS5760762A JP55133698A JP13369880A JPS5760762A JP S5760762 A JPS5760762 A JP S5760762A JP 55133698 A JP55133698 A JP 55133698A JP 13369880 A JP13369880 A JP 13369880A JP S5760762 A JPS5760762 A JP S5760762A
- Authority
- JP
- Japan
- Prior art keywords
- light
- communication system
- low
- receiving side
- output
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Optical Communication System (AREA)
Abstract
PURPOSE:To obtain an optical communication system where a superior communication is possible even for a high-speed and low-S//N weak light, by adopting a system strong against S//N which is a merit of frequency shift to raise outputs in the light transmitting side and the light receiving side. CONSTITUTION:1 and 0 of the digital signal are received by a line receiver 1, and the voltage of a frequency shift oscillator 2 is controlled to oscillate two high frequencies corresponding to 1 and 0, and these frequencies are applied to a double balanced mixer 3, and a low frequency of the difference between the output of the mixer 3 and the output of a local oscillator 6 is taken out by an LPF4 to cause a light emitting diode to emit the light through an output amplifier 5, thus transmitting the signal to optical fibers. The digital signal transmitted to optical fibers is received by the receiving device in the receiving side, and thus, outputs in the transmission side and the receiving side are raised to perform a superior communication by a high-speed and low-S//N weak light.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55133698A JPS5760762A (en) | 1980-09-27 | 1980-09-27 | Asynchronous high-speed digital optical communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55133698A JPS5760762A (en) | 1980-09-27 | 1980-09-27 | Asynchronous high-speed digital optical communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5760762A true JPS5760762A (en) | 1982-04-12 |
Family
ID=15110787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55133698A Pending JPS5760762A (en) | 1980-09-27 | 1980-09-27 | Asynchronous high-speed digital optical communication system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5760762A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0509500A2 (en) * | 1991-04-19 | 1992-10-21 | Ascom Tech Ag | Device for bidirectional simultaneous transmission of digital information |
-
1980
- 1980-09-27 JP JP55133698A patent/JPS5760762A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0509500A2 (en) * | 1991-04-19 | 1992-10-21 | Ascom Tech Ag | Device for bidirectional simultaneous transmission of digital information |
EP0509500A3 (en) * | 1991-04-19 | 1993-04-21 | Ascom Tech Ag | Device for bidirectional simultaneous transmission of digital information |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ATE115797T1 (en) | TRANSMITTER/RECEIVER PART FOR A BIDIRECTIONAL COHERENT-OPTICAL TRANSMISSION SYSTEM. | |
ES2089595T3 (en) | DIGITAL OPTICAL TRANSMISSION SYSTEM WITH A WAVE GUIDE WITH DISPERSION AT WORK WAVE LENGTH. | |
US4704741A (en) | Bidirectional optical communication system | |
ES2068272T3 (en) | TRANSMISSION ROUTE. | |
DE59107028D1 (en) | Radio for an FDM-TDM radio transmission system. | |
ATE121248T1 (en) | BIDIRECTIONAL TELECOMMUNICATIONS SYSTEM. | |
JPS5760762A (en) | Asynchronous high-speed digital optical communication system | |
NO924533L (en) | RADIOTTEST LIFE FOR A RADIOTRANSCEIVER | |
TR26000A (en) | PROCEDURE FOR THE OPERATION OF HATERODINE WITH A LASER EXERCISE FOR OPTIC TRANSMISSION OF INFORMATION BETWEEN TRANSMITTER AND RECEIVER AS A SPACE FROM ONE. | |
JPS57190436A (en) | Adjusting method for optical transmitting line | |
ATE188074T1 (en) | OPTICAL TRANSMISSION SYSTEM WITH FREQUENCY TUNING | |
DK0500157T3 (en) | Optical transmit and receive system including optical circulator | |
JPS5797734A (en) | Receiving device | |
JPS574625A (en) | Optical communication system | |
DE68908684D1 (en) | Device for the transmission of asynchronous data via an infrared channel. | |
JPS5613850A (en) | Secondary signal piling transmission system | |
JPS6434030A (en) | Optical fiber transmitter | |
JPS54138304A (en) | Transmission unit of optical multiplex modulation | |
JPS57188149A (en) | Operation guarantee device for optical transmission device | |
JPS5573152A (en) | Optical transmitter | |
JPS56112137A (en) | Wave length multistar type network | |
JPS53120544A (en) | Optical transmitter | |
JPS5527749A (en) | Optical fiber two-way transmission system | |
JPS5484402A (en) | Single-mode fiber optical communication system | |
JPS5737999A (en) | Microphone device |