Coupling-Loss Reduction of a Vertically Coupled Microring Resonator Filter by Spot-Size-Matched Busline Waveguides
Applied Optics, Vol. 41, Issue 21, pp. 4394-4399 (2002)
http://dx.doi.org/10.1364/AO.41.004394
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Abstract
To improve the input-output coupling loss of a vertically coupled microring resonator filter, we fabricated microring resonators on an antiresonant reflecting optical waveguide (ARROW) with a large spot size and on the rectangular busline waveguide with a spot-size transformer. The spot size and the tapered structure were optimally designed from the viewpoint of spot-size matching to single-mode fibers and the reduction of radiation loss. Clear dropping responses were demonstrated for the ARROW-based microring resonator filters, and the coupling loss was successfully reduced by 22 dB.
© 2002 Optical Society of America
[Optical Society of America ]
OCIS Codes
(060.4230) Fiber optics and optical communications : Multiplexing
(130.3120) Integrated optics : Integrated optics devices
(230.7380) Optical devices : Waveguides, channeled
Citation
Tomoyuki Kato, Shuichi Suzuki, Yasuo Kokubun, and Sai Tak Chu, "Coupling-Loss Reduction of a Vertically Coupled Microring Resonator Filter by Spot-Size-Matched Busline Waveguides," Appl. Opt. 41, 4394-4399 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-21-4394
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