Numerical analysis of multimode interference effect in Ti:LiNbO3 waveguides

Lin-Ping Shen; Hua Wang; Chenglin Xu; Wei-Ping Huang

doi:10.1117/12.628718

12 October 2005 Numerical analysis of multimode interference effect in Ti:LiNbO₃ waveguides

Lin-Ping Shen, Hua Wang, Chenglin Xu, Wei-Ping Huang

Proceedings Volume 5970, Photonic Applications in Devices and Communication Systems; 59700W (2005) https://doi.org/10.1117/12.628718
Event: Photonics North, 2005, Toronto, Canada

Abstract

The self-image effects of the multi-port multimode couplers based on weakly guided graded Ti:LiNbO₃ optical waveguides are analyzed through the three dimensional (3D) full-vector beam propagation method (FVBPM). By applying the perfect matching layer (PML) boundary condition, we can efficiently calculate the various performances such as insertion loss, crosstalk, and power splitting ratio of the multimode couplers. Through this model, the effect of the design and fabrication parameters such as the thickness and width of the Ti-strip and diffusion time and temperature on performances of the multimode couplers can be easily investigated. By comparing with traditional MMI couplers based on step-index optical waveguides, some salient features are observed and the related design rules should be revised. Finally, some related issues such as the bending loss and high order modes are discussed.

Citation Download Citation

Lin-Ping Shen, Hua Wang, Chenglin Xu, and Wei-Ping Huang "Numerical analysis of multimode interference effect in Ti:LiNbO₃ waveguides", Proc. SPIE 5970, Photonic Applications in Devices and Communication Systems, 59700W (12 October 2005); https://doi.org/10.1117/12.628718

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