Optical time delay apparatus incorporating diffractive...

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

2007-03-13

2007-03-13

Healy, Brian M. (Department: 2883)

Optical waveguides

With optical coupler

Input/output coupler

C385S014000, C385S015000, C385S016000, C385S017000, C385S018000, C385S024000, C385S129000, C385S130000, C398S045000, C398S047000, C398S053000, C398S082000, C398S084000, C398S087000

Reexamination Certificate

active

11155327

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.

REFERENCES:
patent: 5239598 (1993-08-01), Wight et al.
patent: 5355237 (1994-10-01), Lang et al.
patent: 6266464 (2001-07-01), Day et al.
patent: 6351586 (2002-02-01), Krol et al.
patent: 6393177 (2002-05-01), Paek
patent: 6563966 (2003-05-01), Tang

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