Optical waveguides – With optical coupler – Particular coupling structure
Patent
1997-08-01
1999-06-29
Palmer, Phan T. H.
Optical waveguides
With optical coupler
Particular coupling structure
385 39, 385 45, G02B 626
Patent
active
059179740
ABSTRACT:
The subject invention pertains to a method of apodizing interaction in spatially-coupled waveguides capable of implementing any desired interaction-strength profiles, for example, alternating functions. Wavelength filters with various types of spectral response can be synthesized. In a preferred embodiment, a Butterworth-type interaction profile is disclosed which provides a flat-top response with suppressed sidelobes. The method according to the subject invention is based on spatially offsetting a single-mode waveguide with respect to a two-mode waveguide in which the anti-symmetric mode is excited by using a Y-junction mode splitter. The method can easily be implemented in vertically-coupled structures fabricated with the use of conventional fabrication processes. Various embodiments of the method implemented. The subject invention further pertains to the device produced in accordance with the methods of the subject invention.
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Ramaswamy Ramu V.
Tavlykaev Robert F.
Advanced Photonics Technology, Inc.
Palmer Phan T. H.
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