Optical waveguides – With optical coupler – Particular coupling function
Patent
1993-02-24
1994-05-03
Gonzalez, Frank
Optical waveguides
With optical coupler
Particular coupling function
385 24, 385 30, 385 42, G02B 626
Patent
active
053095340
ABSTRACT:
We describe an interferometric, channel-dropping, optical filter that includes a pair of planar waveguides. The two waveguides are spaced apart by a distance which is periodically varied along the longitudinal axis of the filter in order to effect a periodic optical coupling between them. There are at least three coupling locations, each associated with a coupling constant. The two waveguides have nominally equal effective refractive indices. In preferred embodiments of the invention, the coupling constants decrease symmetrically from the center of the filter toward the ends.
REFERENCES:
patent: 3936144 (1976-02-01), Caton
patent: 4900119 (1990-02-01), Hill et al.
patent: 4902086 (1990-02-01), Henry et al.
patent: 5189714 (1993-02-01), Okayama et al.
M. Zirngibl et al., "Efficient 1.times.16 Optical Power Splitter Based On InP," Electron. Lett. 28, 1992, pp. 1212-1213.
M. Zirngibl, et al., "Demonstration of 15.times.15 Arrayed Waveguide Multiplexer on InP," IEEE Photon. Technol. Lett. 4, 1992, pp. 1250-1253.
R. Adar et al, "Adiabatic 3-dB Couplers, Filters, and Multiplexers Made with Silica Waveguides on Silicon", J. Lightwave Technol. 10, 1992, 46-50.
C. Bornholdt, et al., "Meander coupler, a novel wavelength division multiplexer/demultiplexer", Appl. Phys. Lett. 57, 1990, pp. 2517-2519.
R. C. Alferness, et al., "Vertically coupled InGaAsP/InP buried rib waveguide filter", Appl. Phys. Lett. 59, 1991, pp. 2573-2575.
R. C. Alferness et al., "Grating assisted InGaAsP/InP vertical codirectional coupler filter", Appl. Phys. Lett. 55, 1989, pp. 2011-2013.
Cohen Leonard G.
Henry Charles H.
Kazarinov Rudolf F.
Kuznetsov Mark E.
AT&T Bell Laboratories
Finston Martin I.
Gonzalez Frank
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