Optical time delay apparatus incorporating diffractive...

Details Optical time delay apparatus incorporating diffractive... Optical time delay apparatus incorporating diffractive...

2009-03-13

2010-11-23

Healy, Brian M (Department: 2883)

Optical waveguides

With optical coupler

Input/output coupler

C385S014000, C385S015000, C385S016000, C385S017000, C385S018000, C385S024000, C385S037000, C385S129000, C385S130000, C385S131000, C385S132000, C398S047000, C398S053000, C398S082000, C398S084000, C398S087000

Reissue Patent

active

RE041954

ABSTRACT:
An optical time delay apparatus comprises: a multi-wavelength optical source; a diffractive element set imparting a wavelength-dependent delay on signals routed from the source to a 1×N optical switch; and N diffractive element sets routing signals from the 1×N switch to an output port. The optical propagation delay between the source and the output port varies according to the operational state of the source and the 1×N switch. A photodetector may receive the time-delayed signal at the output port.

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