Appeal No. 96-3813
Application No. 08/248,937
The appellants' invention relates to an optical coupler
between a semiconductor waveguide and a dielectric waveguide.
Claim 1 is illustrative of the claimed invention, and it
reads as follows:
1. A coupler between a semiconductor waveguide and a
dielectric waveguide, comprising:
(a) a grating between a rectangular semiconductor
waveguide and a dielectric waveguide with a roughly square
core, wherein said grating has a mechanical wave vector equal
to the difference between a propagation vector of said
semiconductor waveguide and a propagation vector of said
dielectric waveguide.
The prior art references of record relied upon by the
examiner in rejecting the appealed claims are:
Fukushima et al. (Fukushima) 5,070,488 Dec.
03, 1991
Laybourn et al. (Laybourn) GB 1535171 Dec. 06, 1978
Nobuhara JP 3-2630102 Nov. 22, 1991
Claims 1, 3, and 11 through 23 stand rejected under 35
U.S.C. § 103 as being unpatentable over Laybourn in view of
Nobuhara, and further in view of Fukushima for claims 12, 13,
17, 18, 22, and 23.
Our understanding of this reference is based upon a translation2
provided by the Scientific and Technical Information Center of the Patent and
Trademark Office. A copy of the translation is enclosed with this decision.
2
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