Abstract
The design of an optical switch based on a directional coupler with tapered velocity and tapered coupling is investigated. The physical principle is based on power transfer by the evolution of a single normal mode. We consider cases where the coupling coefficient and guide mismatch variation are determined by optimized shape functions related to rectangle, raised cosine, Hamming, and Blackman window functions. Following simplified analysis by coupled mode theory, the physical parameters of the device are determined and the predicted performance is verified by the method of lines. Significant improvement in sidelobe levels and coupling length can be obtained by careful design.
| Original language | English |
|---|---|
| Pages (from-to) | 1907-1914 |
| Number of pages | 8 |
| Journal | Journal of Lightwave Technology |
| Volume | 16 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 1998 |
Bibliographical note
Funding Information:Manuscript received September 24, 1997; revised March 24, 1998. This work was supported by BPP Teknologi (Republic of Indonesia) and CAPES (Education Ministry of Brazil). A. Syahriar and V. M. Schneider are with the Department of Electrical and Electronic Engineering, Imperial College, London SW7 2BT U.K. S. Al-Bader is with the Department of Electrical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia. Publisher Item Identifier S 0733-8724(98)06668-7.
Keywords
- Coupled mode theory
- Couplers
- Integrated optics
- Method of lines
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
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