Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Reexamination Certificate
2006-04-18
2006-04-18
Font, Frank G. (Department: 2883)
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
Reexamination Certificate
active
07031587
ABSTRACT:
A waveguide type photoreceptor device of the present invention comprises a waveguide16adisposed on a Fe-doped InP substrate, the waveguide including an n-cladding layer connected to an n-electrode, an n-light guide layer, a light absorption layer, a p-light guide layer, and a p-cladding layer connected to a p-electrode, laminated onto one another over the Fe-doped InP substrate, and the ratio of the layer thickness of the thicker one of the n-light guide layer and the p-light guide layer to that of the thinner one being between 1.3 and 5 both inclusive.
REFERENCES:
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T. Ido, et al., Monday Afternoon, vol 1, OFC 2003, pp. 66-67, “Highly Efficient Lens-Less Coupling of High-Speed Waveguide Photodiode to SMF and Its Application to an Extremely Thin Surface-Mountable 10-GBPS Receiver Module”, 2003.
Y. Matsuoka, et al., Extended Abstracts (The 50thSpring Meeting, 2003); The Japan Society of Applied Physics and Related Societies, No. 3, p. 1246, “Properties of λ=1.5 μm 10GB/S Waveguide PIN-PD”, 2003 (with english translation).
U.S. Appl. No. 10/777,136, filed Feb. 13, 2004, unknown.
Ishimura Eitaro
Nakaji Masaharu
Font Frank G.
Mitsubishi Denki & Kabushiki Kaisha
Rude Timothy
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