Experimental evidence of modal properties using directional couplers in silicon-on-insulator

Graham T. Reed; William R. Headley; Seong P. Chan; Goran Z. Masanovic; Simon Howe; David Thomson

doi:10.1117/12.652210

1 March 2006 Experimental evidence of modal properties using directional couplers in silicon-on-insulator

Graham T. Reed, William R. Headley, Seong P. Chan, Goran Z. Masanovic, Simon Howe, David Thomson

Proceedings Volume 6125, Silicon Photonics; 61250N (2006) https://doi.org/10.1117/12.652210
Event: Integrated Optoelectronic Devices 2006, 2006, San Jose, California, United States

Abstract

The single-mode optical rib waveguide is a fundamental building block for many, more complex optical circuits. Recent modelling has been provided in the literature that has investigated polarisation and modal properties of small, deeplyetched rib waveguides in SOI. In this paper we present work that has utilised a total of 160 directional couplers fabricated from rib waveguides of various waveguides dimensions, to investigate the validity of the published modelling. In particular 5 waveguide designs have been used to fabricate directional couplers of differing lengths, to map out the variation in coupling of power within the directional couplers. For a singlemode device, a characteristic sinusoidal variation is expected, but the sinusoid will be corrupted in the presence of higher order modes, each of which will have a different coupling length as compared to the fundamental mode. We have observed experimental results that are consistent with the modelling for each of the 5 waveguide designs, and hence we present experimental evidence of higher-order mode behaviour that is consistent with modelling.

Citation Download Citation

Graham T. Reed, William R. Headley, Seong P. Chan, Goran Z. Masanovic, Simon Howe, and David Thomson "Experimental evidence of modal properties using directional couplers in silicon-on-insulator", Proc. SPIE 6125, Silicon Photonics, 61250N (1 March 2006); https://doi.org/10.1117/12.652210

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