The most common channel used for optical communication today is the optical fiber. LEDs (light emitting
diodes) transmits the message after it has been encoded by intensity modulation techniques, to receivers.
Another type of optical communication occurs within computers from chip to chip or within a single chip.
Optical Fibers
Communications are transformed into data signals in the form of modulated pulses of light which are carried on
optical fibers. These fibers are composed of a very thin cylinder of glass called a core surrounded by cladding,
a concentric layer of glass. These may be surrounded by a liquid gel that helps to reduce signal loss. Many
optical fibers are bundled together into a cable.
There two different types of optic fiber called SMF and MMF. SMF transmits a single light beam coming from a
laser. This modulated light beam has a greater bandwidth that can run over long distances and is used in
networks for cable television and telephone. The MMF optical fiber carries multiple light beams simultaneously
using the light from LEDs (light emitting diodes). The multiple beams have different reflection angles. MMF is
used to transmit optical messages over short distance.
Intersatellite Links
The concept of optical communication in space has been around a few years in governmental programs and
NASA. However, it has also become a hot topic for non-governmental and business uses. The market in optical
communications that are space-based, especially for intersatellite links (ISLs) has grown significantly.
System designers usually want to use parameters that can be used in optical communication on satellites
relative to weight, size and power. Systems with telescope aperture antenna with a radio frequency system that
can provide us with tens of dBs in the improvement of link efficiency, especially in data rate and margin will be
sought after. Future communication needs will demand it.
REFERENCES
Research article 1
Investigates two-dimensional (2D) optical intensity channels capacity when the transmitted signal is binary level.
Research Article 2
Signal-masked optical communication utilizing amplified spontaneous emission of an optical amplifier
Research Article 3
All-optical coding of mode-locked semiconductor laser pulse trains for high bit rate optical communication
Research Article 4
Decryption characteristics in message modulation type chaos secure communication system using optical fiber
ring resonators
Research Article 5
Superposition and detection of two helical beams for optical orbital angular momentum communication
diodes) transmits the message after it has been encoded by intensity modulation techniques, to receivers.
Another type of optical communication occurs within computers from chip to chip or within a single chip.
Optical Fibers
Communications are transformed into data signals in the form of modulated pulses of light which are carried on
optical fibers. These fibers are composed of a very thin cylinder of glass called a core surrounded by cladding,
a concentric layer of glass. These may be surrounded by a liquid gel that helps to reduce signal loss. Many
optical fibers are bundled together into a cable.
There two different types of optic fiber called SMF and MMF. SMF transmits a single light beam coming from a
laser. This modulated light beam has a greater bandwidth that can run over long distances and is used in
networks for cable television and telephone. The MMF optical fiber carries multiple light beams simultaneously
using the light from LEDs (light emitting diodes). The multiple beams have different reflection angles. MMF is
used to transmit optical messages over short distance.
Intersatellite Links
The concept of optical communication in space has been around a few years in governmental programs and
NASA. However, it has also become a hot topic for non-governmental and business uses. The market in optical
communications that are space-based, especially for intersatellite links (ISLs) has grown significantly.
System designers usually want to use parameters that can be used in optical communication on satellites
relative to weight, size and power. Systems with telescope aperture antenna with a radio frequency system that
can provide us with tens of dBs in the improvement of link efficiency, especially in data rate and margin will be
sought after. Future communication needs will demand it.
REFERENCES
Research article 1
Investigates two-dimensional (2D) optical intensity channels capacity when the transmitted signal is binary level.
Research Article 2
Signal-masked optical communication utilizing amplified spontaneous emission of an optical amplifier
Research Article 3
All-optical coding of mode-locked semiconductor laser pulse trains for high bit rate optical communication
Research Article 4
Decryption characteristics in message modulation type chaos secure communication system using optical fiber
ring resonators
Research Article 5
Superposition and detection of two helical beams for optical orbital angular momentum communication
| Optical Communication Telecommunications that use light as the transmission medium is called optical communication. In this form of communication transmitters encode a message into light as an optical signal, which is transported to a receiver. The receiver returns the message to its original understandable form. Basic forms of optical communication has been around for a long time, such as the use of signal lamps by the Navy and Aldis lamps to communicate distress messages. Today, we use optical applications, such as optical fibers that send messages over cables and free-space optics that communicate over short distances. |
