Optical pulse code recognition device and optical distributor

Details Optical pulse code recognition device and optical distributor Optical pulse code recognition device and optical distributor

2005-06-07

2005-06-07

Stcyr, Daniel (Department: 2876)

Optical waveguides

Having nonlinear property

C385S015000

Reexamination Certificate

active

06904211

ABSTRACT:
An optical pulse code recognition device and an optical distributor recognize multiple bits of a 1 Tbps packet signal as they are, all at one time. A serial signal light emitted from an optical fiber is collimated by a lens and applied onto a mask having a mask pattern. A thin film optical switch increases its optical transmittance when irradiated with a control light, allowing the collimated signal light to transmit through it. When the control light is applied, the transmitted collimated signal light is converted into a parallel signal. The mask pattern has multiple transmission portions allowing one bit of signal light to transmit through and an equal number of non-transmitting portions to block the light, and whether or not a bit pattern of the signal light and the mask pattern match each other is found by detecting a maximum or minimum value of light intensity with a photodetector.

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