Optical modulators using semiconductor nano-structures: Difference between revisions

Revision as of 11:17, 7 June 2009

Revision as of 13:36, 8 June 2009

Line 1:

An '''[[optical modulator''']] is a optical device which is used to modulate a beam of light with perturbation device. it is a kind of transmitter to convert information to optical binary signal through [[optical fiber]] ([[optical waveguide]]) or transmission medium of optical frequency in fiber optic communication. There are several method to manipulate this device depending on the parameter of a light beam like [[amplitude modulator]] (majority), [[phase modulator]], polarization modulator etc.

<!-- Please do not remove or change this AfD message until the issue is settled -->

{{AfDM|page=Optical modulators using semiconductor nano-structures|logdate=2009 June 7|substed=yes }}

<!-- For administrator use only: {{oldafdfull|page=Optical modulators using semiconductor nano-structures|date=7 June 2009|result='''keep'''}} -->

<!-- End of AfD message, feel free to edit beyond this point -->

An '''optical modulator''' is a optical device which is used to modulate a beam of light with perturbation device. it is a kind of transmitter to convert information to optical binary signal through [[optical fiber]] ([[optical waveguide]]) or transmission medium of optical frequency in fiber optic communication. There are several method to manipulate this device depending on the parameter of a light beam like [[amplitude modulator]] (majority), [[phase modulator]], polarization modulator etc.

The easiest way to obtain modulation is modulation of intensity of a light by the current driving the light source ([[laser diode]]). This sort of modulation is called direct modulation, as opposed to the external modulation performed by a light modulator. For this reason, light modulators are called external light modulators.