JPS6418338A - Optical signal transmission equipment - Google Patents

Optical signal transmission equipment

Info

Publication number
JPS6418338A
JPS6418338A JP62174519A JP17451987A JPS6418338A JP S6418338 A JPS6418338 A JP S6418338A JP 62174519 A JP62174519 A JP 62174519A JP 17451987 A JP17451987 A JP 17451987A JP S6418338 A JPS6418338 A JP S6418338A
Authority
JP
Japan
Prior art keywords
output
circuit
bit error
bit
outputted
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
Application number
JP62174519A
Other languages
Japanese (ja)
Inventor
Kenichi Nomura
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP62174519A priority Critical patent/JPS6418338A/en
Publication of JPS6418338A publication Critical patent/JPS6418338A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To detect the production of a bit error in all circuits including the lighting means by decoding an output electric signal of a photodiode monitoring a back face light of a laser diode, and utilizing it for the detection of a bit error. CONSTITUTION:An input signal is code-converted by a coding circuit 2 and outputted to an optical transmitter 3. The optical transmitter 3 monitors the back light of the output light of the laser diode 5 by means of a photodiode 6 and the optical output is made stable at an APC circuit 4 by using a monitor waveform amplitude. The monitor waveform output of the photodiode 6 is supplied an identification device 7, from which the identified and subject to photoelectric conversion is outputted from the optical transmitter 3. The electric signal is decoded by a decoding circuit 9 and outputted to a bit error detection circuit 10. The bit error detection circuit 10 synchronizes the output signal of the decoding circuit 9 with the input signal 1 to apply error detection by bit by bit collation.
JP62174519A 1987-07-13 1987-07-13 Optical signal transmission equipment Pending JPS6418338A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62174519A JPS6418338A (en) 1987-07-13 1987-07-13 Optical signal transmission equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62174519A JPS6418338A (en) 1987-07-13 1987-07-13 Optical signal transmission equipment

Publications (1)

Publication Number Publication Date
JPS6418338A true JPS6418338A (en) 1989-01-23

Family

ID=15979939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62174519A Pending JPS6418338A (en) 1987-07-13 1987-07-13 Optical signal transmission equipment

Country Status (1)

Country Link
JP (1) JPS6418338A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010213205A (en) * 2009-03-12 2010-09-24 Toshiba Corp Visible light communication monitoring apparatus and visible light communication monitoring method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010213205A (en) * 2009-03-12 2010-09-24 Toshiba Corp Visible light communication monitoring apparatus and visible light communication monitoring method

Similar Documents

Publication Publication Date Title
US3541341A (en) Redundant fiber-optic light guide construction
SE9600322D0 (en) Sensor for pulse oximetry with fiber optic signal transmission
JPS56131214A (en) Catv device
EP0336235A3 (en) Light identifying system
KR890007515A (en) Method of transmitting optical signal in both directions through the wave conductor
EP0874490A3 (en) Optical transmission apparatus
TW200513842A (en) Methods and apparatus to detect an operating state of a display
TW330300B (en) Optoelectric converting apparatus and method
ATE41540T1 (en) MONITORING DEVICE FOR TRAFFIC SIGNAL SYSTEMS.
JPS5725737A (en) Optical fiber communication device
SE8306221L (en) DEVICE FOR MANUAL TESTING OF DRAWINGS OF AN OPTICAL SUBSCRIPTION CONNECTION LINE OF GLASS FIBER WITH DOUBLE DIRECTED DIVISION OF WAVE LENGTHS IN CHANNELS
JPS648823A (en) Internal abnormal state diagnosing device for sf6-filled electric apparatus
JPS61159122A (en) Temperature signal transmitter
JPS6430876A (en) Transmission device for train information using optical fiber
ES2042847T3 (en) OPTICALLY COUPLED REMOTE SENSOR APPARATUS AND SYSTEM.
JPS6477233A (en) Optical transmission system
JPS6463875A (en) Electroscope apparatus
JPS57179762A (en) Surge receiving type fault point orienting device
JPS5652947A (en) Signal transmitter and receiver
JPS6459082A (en) Cable disconnection detecting method
JPS646834A (en) Instrument for measuring light emission spectrum
SU789781A1 (en) Voltage monitoring apparatus
GB2269932A (en) Method and control circuit for controlling a laser diode transmitter
JPS649667A (en) Semiconductor device
CA2049163A1 (en) Signal processing system of optical fiber gyro