Dynamic gain equalizer

Details Dynamic gain equalizer Dynamic gain equalizer

2007-08-07

2007-08-07

Ton, Toan (Department: 2871)

Liquid crystal cells, elements and systems

Liquid crystal optical element

Beam dividing switch formed from liquid crystal cell

C349S197000

Reexamination Certificate

active

10509699

ABSTRACT:
A dynamic gain equalizer (1) comprises a spectroscope (4) for separating a light entering from an incoming end, a liquid crystal optical switch (5) for receiving spectral components separated by the spectroscope (4), and a lens system (3) arranged between the incoming end and the spectroscope (4) and/or between the spectroscope (4) and the liquid crystal optical switch (5). The liquid crystal optical switch (5) changes the light intensities of incoming spectral components for each wavelength and sends them out. The dynamic gain equalizer selectively controls the spectral components of specific wavelengths and equalizes the light intensities for the wavelengths without using a mechanical moving part such as a MEMS.

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