Title:
LIGHT TRANSMISSION SYSTEM FOR HIGH FREQUENCY DIGITAL SIGNAL
Document Type and Number:
Japanese Patent JPS5862945
Kind Code:
A
Abstract:
A desire exists in the optical transmission of optical signals to co-transmit a service channel or telemetry signals in the form of an additional low frequency signal over the light conductor, since a remote feed line or a service channel is not always installed parallel to the light conductor length. The requirement exists for the transmission of the additional signal that, in addition to a low additional expense, no disruption of the actual useful signal can occur. To this end, the control signal of a laser diode transmitter is modulated with the signal to be additionally transmitted and this light component is coupled out at the receiving side. The structure is particularly useful in optical transmission systems for very high frequency digital signals with bit rates above 100 Mbit/s.
Inventors:
HAINRITSUHI KAIRU
HERUBUITSUHI RITOMUMERU
HERUBUITSUHI RITOMUMERU
Application Number:
JP16242582A
Publication Date:
April 14, 1983
Filing Date:
September 20, 1982
Export Citation:
Assignee:
SIEMENS AG
International Classes:
H04B10/50; H04B10/564; H04B17/00; H04J14/00; H04J14/04; H04J14/06; H04L25/38; H01S5/0683; (IPC1-7): H04B9/00; H04L25/02
Attorney, Agent or Firm:
Toshio Yano