Rotation-Symmetric Multispot Focusing Phase-Shifted Grating Coupler for Integrated Semiconductor Laser

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Published 17 April 2012 Copyright (c) 2012 The Japan Society of Applied Physics
, , Citation Kengo Uenishi et al 2012 Jpn. J. Appl. Phys. 51 058001 DOI 10.1143/JJAP.51.058001

1347-4065/51/5R/058001

Abstract

Rotation-symmetric multispot focusing grating couplers with periodic binary phase modulation are designed and fabricated. The functions of 60 and 45° rotation-symmetric multispot focusing with the same spot intensities were demonstrated.

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10.1143/JJAP.51.058001