Ultracompact tapers for light coupling into two-dimensional slab photonic-crystal waveguides in the slow light regime

Delphine Marris-Morini; Eric Cassan; Damien Bernier; Guillaume Maire; Laurent Vivien

doi:10.1117/1.2831132

1 January 2008 Ultracompact tapers for light coupling into two-dimensional slab photonic-crystal waveguides in the slow light regime

Delphine Marris-Morini, Eric Cassan, Damien Bernier, Guillaume Maire, Laurent Vivien

Author Affiliations +

Optical Engineering, Vol. 47, Issue 1, 014602 (January 2008). https://doi.org/10.1117/1.2831132

Abstract

Optical coupling from a strip waveguide to a two-dimensional photonic crystal (PC) slab waveguide in the slow light regime is investigated. Group-velocity mismatch between optical modes is responsible for large coupling loss. Typical devices based on a W1 PC waveguide, with strip input and output waveguides on each side, are studied using finite-difference time-domain and plane-wave expansion calculations. Compact tapers based on PC lattice parameter tuning are proposed to reduce the coupling loss. At 1.6 μm, for an optical mode with group velocity v_g/c=0.054, the transmission can be enhanced from 18% without tapers to 95% with a 3.4-μm-long taper on each side of the PC.

©(2008) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Delphine Marris-Morini, Eric Cassan, Damien Bernier, Guillaume Maire, and Laurent Vivien "Ultracompact tapers for light coupling into two-dimensional slab photonic-crystal waveguides in the slow light regime," Optical Engineering 47(1), 014602 (1 January 2008). https://doi.org/10.1117/1.2831132

Published: 1 January 2008

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available