Abstract

The characteristics of silicon-on-insulator (SOI) ridge waveguides are analyzed by using a cylindrical full-vectorial finite-difference method mode solver with a perfectly-matched layer treatment. First, the single-mode condition for an SOI ridge nanowire with different Si core thicknesses is obtained. The obtained single-mode condition is different from that for the conventional micrometrical SOI ridge waveguides with a large cross section. By adjusting the cross section (the core width and the etching depth), one can have a nonbirefringent SOI ridge nanowire. The analysis on the bending loss of SOI ridge nanowires shows that one can have a relatively small bending radius even with a shallow etching (i.e., a small ratio γ between the etching depth and the total thickness). For example, even when one chooses a small ratio γ=0.4, one still has a low bending loss with a small bending radius of 15μm for an SOI nanowire with a thin core hco=250nm, which is very different from a conventional large SOI ridge waveguide.

© 2007 Optical Society of America

Full Article  |  PDF Article
Related Articles
Analysis of characteristics of bent rib waveguides

Daoxin Dai and Sailing He
J. Opt. Soc. Am. A 21(1) 113-121 (2004)

Eliminating the birefringence in silicon-on-insulator ridge waveguides by use of cladding stress

D.-X. Xu, P. Cheben, D. Dalacu, A. Delâge, S. Janz, B. Lamontagne, M.-J. Picard, and W. N. Ye
Opt. Lett. 29(20) 2384-2386 (2004)

High-index-contrast waveguides and devices

Mee-Koy Chin, Chee-Wei Lee, Shuh-Ying Lee, and Stevanus Darmawan
Appl. Opt. 44(15) 3077-3086 (2005)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription