Multiple wavelength optical source

Details Multiple wavelength optical source Multiple wavelength optical source

2007-04-10

2007-04-10

Sanghavi, Hemang (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

C385S024000, C372S020000, C372S102000

Reexamination Certificate

active

11383494

ABSTRACT:
A planar optical waveguide is formed having sets of locking diffractive elements and means for routing optical signals. Lasers are positioned to launch signals into the planar waveguide that are successively incident on elements of the locking diffractive element sets, which route fractions of the signals back to the lasers as locking feedback signals. The routing means route between lasers and output port(s) portions of those fractions of signals transmitted by locking diffractive element sets. Locking diffractive element sets may be formed in channel waveguides formed in the planar waveguide, or in slab waveguide region(s) of the planar waveguide. Multiple routing means may comprise routing diffractive element sets formed in a slab waveguide region of the planar waveguide, or may comprise an arrayed waveguide grating formed in the planar waveguide. The apparatus may comprise a multiple-wavelength optical source.

REFERENCES:
patent: 5274657 (1993-12-01), Hori et al.
patent: 2006/0256831 (2006-11-01), Volodin et al.

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