Electronics &
Communication Technologies -
Laser Based Digital Data Communicator
Introduction
Semiconductor laser communicator offers a low cost,
short-range, secure infrared data communication for
transmission of computer and telemetry data. This can
be easily installed in short notice provided transmitter
and receiver can see each other. The system consists
of two sets of transceivers units, which can transmit
10K bits/sec of digital information for a range of 1.5
km.
Each transmitter emits IR pulses of 200nsec duration
with peak power of 4W. At the receiver end, the light
pulses are focused on a photodiode with the help of
suitable optics, which converts them into electrical
pulses. These pulses are further processed for interfacing
with the computer. The data is exchanged at two ends
without laying any cable. Due to unique property of
very low divergence of laser beam, the system offers
secure communication of data as compared to radio link.
Specifications
High security and privacy of communication
Quick & easy installation
Low power consumption
Point to point communication
Full duplex link
Maximum range in fair weather - 1.5 km
Free from EM/RF interference
No licensing required
Alignment of units with sighting telescope
Application
For secure data communication in Defence and sensitive
areas, at Airports for communication across the runways,
for Telemetry data and Remote Control. It can also be
used in Industries, Research Laboratories, Hospitals
etc. for local area networks and computer peripheral
remoting.
For further information please contact
:
Head,
Technology Transfer & Collaboration Division,
Bhabha Atomic Research Centre,
Trombay, Mumbai - 400 085
Tel : 091-022-25505337/25593897
Fax : 091-022-25505151
E-mail : headttcd@barc.gov.in
