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
Full Article | PDF ArticleMore Like This
Taro Ikeda and Kazuhiro Hane
Opt. Express 21(19) 22034-22042 (2013)
Marko Galarza, Kurt De Mesel, Roel Baets, Alfredo Martínez, Cándido Aramburu, and Manuel López-Amo
Appl. Opt. 42(24) 4841-4846 (2003)
R. Grover, P. P. Absil, V. Van, J. V. Hryniewicz, B. E. Little, O. King, L. C. Calhoun, F. G. Johnson, and P.-T. Ho
Opt. Lett. 26(8) 506-508 (2001)