Low-reflection photonic-crystal taper for efficient coupling between guide sections of arbitrary widths

Year: 2002

Authors: Talneau A., Lalanne P., Agio M., Soukoulis C.M.

Autors Affiliation: Ctr Natl Rech Sci, Lab Photon & Nanostrut, F-91460 Marcoussis, France; Ctr Natl Rech, Lab Charles Fabry, Inst Opt, F-91403 Orsay, France; Univ Pavia, Dipartimento Fis A Volta, Ist Nazl Fis Mat, I-27100 Pavia, Italy; Res Ctr Crete, GR-71110 Iraklion, Greece.

Abstract: We design and fabricate a new taper structure for adiabatic mode transformation in two-dimensional photonic-crystal waveguides patterned into a GaInAsP confining layer. The taper efficiency is validated by measurement of a reduction of the reflection between an access ridge and a photonic-crystal guide with one missing row from 6% to less than 1%. This taper is then incorporated into a 60degrees bend; simulations demonstrate a 90% transmission between multimode ports.

Journal/Review: OPTICS LETTERS

Volume: 27 (17)      Pages from: 1522  to: 1524

KeyWords: Wave-guides; Mu-m; Bends; Transmission; Propagation; Losses
DOI: 10.1364/OL.27.001522

ImpactFactor: 3.511
Citations: 114
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