Integrated optical arrangement of ridge waveguides on a substrat

Details Integrated optical arrangement of ridge waveguides on a substrat Integrated optical arrangement of ridge waveguides on a substrat

1994-02-14

1998-01-06

Ullah, Akm E.

Optical waveguides

Integrated optical circuit

385147, G02B 612

Patent

active

057063737

ABSTRACT:
An integrated optical arrangement operated as a switch composed of at least three ridge waveguides on a substrate, the third ridge waveguide is utilized for an infeed of an optical waveguide proceeding between two parallel ridge waveguides forming the first and second waveguides having either a contacted pn-junction or a contacted pin-junction. As a result of asymmetrical switching of the junctions, the optical wave is coupled over into one or the other of the first and second waveguides. The advantage over traditional directional coupler switch structures are complete symmetry of the two switch conditions, "digital switching behavior", enhanced separation of the output waveguide, low switching losses and greater manufacturing tolerances, reduced polarization sensitivity and increased optical bandwidth.

REFERENCES:
patent: 5125065 (1992-06-01), Stoll et al.
S.P. Chen et al. "Integrated-Optics Switch with Triple-Ridge Coupler", Archiv fur Electronix & Ubertragungstechnik, Stuttgart, W. Germany, vol. 41, No. 6, Nov./Dec. 1987 pp. 377-380.
Cai et al. "A novel Three-Guide Optical Coupler Using a Taper-Formed Waveguide" J. Appl. Phys. vol. 69, No. 5 1 Mar. 1991, pp. 2810-2814.
Donnelly et al. "Optical Guided-Ware Gallium Arsenide Monolithic Interferometer" Appl. Phys. Lett. vol. 45, No. 4 15 Aug. 1984 pp. 360-362.
Motter et al, "Symmetrically Detuned Optical Three-guide Couplers in GaAs" Conference on Lasers and Electro-Optics 1988 Tech. Digest. (CLEO) (no month).
Xie et al, "Carrier-Injected GaInAsP/InP Directional Coupler Optical Switch with Both Tapered Velocity and Tapered Coupling", IEEE Photonics Technology Letters, vol. 4, No. 2, Feb. 1992, pp. 166-169.
E.C.M. Pennings, "Bends in Optical Ridge Waveguides: Modeling and Experiments", CIP-Gegevens Koninklijke Bibliotheek, Den Haag, 1990, pp. 1-20 and pp. 24-29. (no month).
B. Acklin et al, "Novel Optical Switches Based on Carrier Injection in Three and Five Waveguide Couplers: TIC and SIC", Electronics Letters, 3rd Feb. 1994, vol. 30, No. 3, pp. 217-218.

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