Enhanced light coupling in sub-wavelength single-mode silicon on insulator waveguides

Chengxin Pang; Felice Gesuele; Aurélien Bruyant; Sylvain Blaize; Gilles Lerondel; Pascal Royer

Enhanced light coupling in sub-wavelength single-mode silicon on insulator waveguides

Chengxin Pang ¹ Felice Gesuele ¹ Aurélien Bruyant ¹ Sylvain Blaize ¹ Gilles Lerondel ¹ Pascal Royer ¹

1 LNIO - Laboratoire de Nanotechnologie et d'Instrumentation Optique

ICD - Institut Charles Delaunay

Abstract : We report on NIR efficient end-coupling in single-mode silicon on insulator waveguides. Efficient coupling has been achieved using Polymer-Tipped Optical Fibers (PTOF) of adaptable radius of curvature (ROC). When compared with commercial micro lenses, systematic studies as a function of PTOF ROC, lead for subwavelength PTOF to a coupling factor enhancement as high as 2.5. This experimental behavior is clearly corroborated by radial FDTD simulations and an absolute coupling efficiency of about 50% is also estimated.

Keywords : Coupling efficiency Diode lasers Numerical simulation Optical directional couplers Single mode fibers Waveguide modes

Document type :

Journal articles

Domain :

Engineering Sciences [physics] / Optics / Photonic

Complete list of metadatas

https://hal-utt.archives-ouvertes.fr/hal-02311129
Contributor : Daniel Gavrysiak <>
Submitted on : Thursday, October 10, 2019 - 4:33:19 PM
Last modification on : Friday, October 11, 2019 - 1:31:03 AM

Enhanced light coupling in sub-wavelength single-mode silicon on insulator waveguides

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Enhanced light coupling in sub-wavelength single-mode silicon on insulator waveguides

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