Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-03-13
2007-03-13
Pak, Sung (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
C385S129000, C359S010000, C359S015000, C359S034000, C398S079000, C398S084000, C398S087000
Reexamination Certificate
active
11532532
ABSTRACT:
A slab optical waveguide confines in one transverse dimension optical signals propagating in two dimensions therein, and has a set of diffractive elements collectively arranged so as to exhibit positional variation in amplitude, optical separation, or spatial phase. The diffractive elements are collectively arranged so as to apply a transfer function to an input optical signal to produce an output optical signal. The transfer function is determined at least in part by said positional variation in amplitude, optical separation, or spatial phase. The waveguide and diffractive elements are arranged so as to confine only one of the input and output optical signals to propagate in the waveguide so that the optical signal thus confined is successively incident on the diffractive elements, while the other optical signal propagates unconfined by the waveguide in a direction having a substantial component along the confined dimension of the waveguide.
REFERENCES:
patent: 4740951 (1988-04-01), Lizet et al.
patent: 6243514 (2001-06-01), Thompson
patent: 6553162 (2003-04-01), Okayama
patent: 6678429 (2004-01-01), Mossberg et al.
patent: 2005/0063430 (2005-03-01), Doucet et al.
Greiner Christoph M.
Iazikov Dmitri
Mossberg Thomas W.
Alavi David S.
LightSmyth Technologies Inc
Pak Sung
Wong Tina M.
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