Design of a single mesa vertical coupler

Chee-Wei Lee; Shuh-Ying Lee; Mee-Koy Chin

doi:10.1117/12.707718

8 September 2006 Design of a single mesa vertical coupler

Chee-Wei Lee, Shuh-Ying Lee, Mee-Koy Chin

Proceedings Volume 6343, Photonics North 2006; 63431B (2006) https://doi.org/10.1117/12.707718
Event: Photonics North 2006, 2006, Quebec City, Canada

Abstract

A new design of vertical coupler (VC) based on only a single mesa is presented. The newly proposed vertical coupler has the potential of improving the fabrication yield, as it requires much simpler fabrication process. The vertical coupler comprises a large underlying rib waveguide to which light is coupled. The lower waveguide is formed by the loading effect provided by the smaller upper ridge waveguide. The upper ridge waveguide contains the actual device (e.g. modulator or photodetector) and is tapered in a way to maximize the vertical transfer of light from the lower waveguide, and thus the vertical coupler can be used as a spot-size converter (SSC) between a single-mode fiber and the actual device. We investigate the transfer efficiency of the single-mesa vertical coupler with different configurations. The single-mesa design is found to give a lower total loss (i.e., fiber coupling loss plus transfer loss) compared with direct coupling to the actual device. The transfer efficiencies obtained are more than 90% for both TE and TM polarizations, and are polarization independent.

Citation Download Citation

Chee-Wei Lee, Shuh-Ying Lee, and Mee-Koy Chin "Design of a single mesa vertical coupler", Proc. SPIE 6343, Photonics North 2006, 63431B (8 September 2006); https://doi.org/10.1117/12.707718

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