doi: 10.7763/IJET.2012.V4.377
Ultra-Compact Variable All-optical Attenuator Based on Multimode Interference Couplers on an SOI Platform
Trung-Thanh Le
- the Faculty of Information Technology, Hanoi University of Natural Resources and Environment, 41A K1 Phu Dien Road,Tu Liem, Ha Noi, Viet Nam
Abstract
In this paper, two methods for obtaining an ultra compact variable all-optical attenuator based on multimode interference (MMI) using silicon waveguides are proposed. The first method is to use two connected silicon waveguides. The second method is to use a multimode interference coupler. B forming a surface pattern on the top of the MMI region at special positions or on the top of linking waveguides, a variable attenuator is achieved. The device dimension is about 2 <sup>μm</sup> x30 <sup>μm </sup> that is the smallest length of an optical attenuator reported up-to-date. Designs of the proposed devices on silicon on insulator (SOI) platform are then verified and optimized using numerical simulation methods.
Keywords
- Optical computing
- multimode interference (MMI) couplers
- optical attenuator
- SOI waveguide
- CMO Stechnology
- Beam propagation method (BPM)
How to Cite
Trung-Thanh Le, "Ultra-Compact Variable All-optical Attenuator Based on Multimode Interference Couplers on an SOI Platform," International Journal of Engineering and Technology, vol. 4, no. 3, pp. 336-339, 2012. https://doi.org/ 10.7763/IJET.2012.V4.377
Copyright & License
Copyright © 2012 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).