Optical waveguides – With optical coupler – Particular coupling function
Patent
1996-06-04
1997-12-30
Ngo, John
Optical waveguides
With optical coupler
Particular coupling function
385 14, 385131, G02B 626
Patent
active
057039771
ABSTRACT:
Integrated optical mode converter provided with a channel-shaped waveguide comprising a periodic concatenation of two wave-guiding subsections (P) and (Q) defined by a strip-shaped structure supported by a substrate. The waveguide profiles of the subsections (P) and (Q) are defined by two different partial strips, of which at least one is, but preferably both are, provided with a slot (S.sub.P, S.sub.Q) running in a longitudinal direction of the partial strip in question. The slots have been applied in such a manner that only the field distribution of one of the two guided modes involved in the mode conversion is affected. The resulting structure has increased conversion per interface; and lower attenuation in specific embodiments.
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A New Approach to Polarization Independent Integratged Optical Circuits: The Bimodal Polarization Converter, Optical Fiber Conference (OFC '97) Feb. 16-20, 1997, Dallas, Texas.
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J.W. Pedersen et al; "Low Loss Passive Polarisation Splitter on InP/InGaAsP By Use of Mode Conversion"; Feb. 23-25, 1995, Dana Point, California; 1995 Technical Digest Series, vol. 7; Integrated Photonics Research; pp. 165-167.
Koninklijke PTT Nederland N.V.
Ngo John
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