A two-port polarization-insensitive coupler module between single-mode fiber and silicon-wire waveguide

Kazuo Shiraishi; Hidehiko Yoda; Chen S Tsai

doi:10.1364/OE.20.024370

A two-port polarization-insensitive coupler module between single-mode fiber and silicon-wire waveguide

Opt Express. 2012 Oct 22;20(22):24370-5. doi: 10.1364/OE.20.024370.

Authors

Kazuo Shiraishi¹, Hidehiko Yoda, Chen S Tsai

Affiliation

¹ Graduate School of Engineering, Utsunomiya University, Utsunomiya 321-8585, Japan. kazuos@cc.utsunomiya-u.ac.jp

PMID: 23187200
DOI: 10.1364/OE.20.024370

Abstract

A two-port polarization-insensitive single-mode fiber-silicon wire-waveguide coupler module, 5.3 × 3.4 × 0.7 mm(3) in size, is realized. The spot-size converter (SSC) involved utilizes a concatenated horizontal up-taper and vertical down-taper. Measured coupling losses between the fiber and the silicon-wire waveguide of the E(11)(y) and E(11)(x) modes of the SSC are 2.8 and 2.7 dB/port, respectively. The device platform is planar, robust, and easy to fabricate with conventional lithography.

Publication types

Research Support, Non-U.S. Gov't