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Proceedings Paper

Generation of Ti:LiNbO[sub]3[/sub] Directional Coupler Based Photonic Switching Architectures With Optimal Substrate Real Estate Utilization
Author(s): Subrat Kar; A. Selvarajan
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Paper Abstract

We suggest two Computer Aided Design algorithms, PAD and PAL, for the design of Ti:LiNb03 directional coupler based photonic switching architectures. PAD (Photonic Architecture Designer) generates higher order architectures by taking a lour order architecture as a rearrangeably nonblocking unit cell used as a building block. It then proceeds to test the generated netlist for nonblocking capability. PAL (Photonic Architecture Layout optimizer) takes a given architecture as input and finds the optimal layout with respect to coupled power between waveguides, substrate real estate utilization and number of crossovers. The directional coupler is taken as the unit cell and perturbed (translated/rotated) till the cost functions described above are satisfied. The inter-connecting waveguides are treated as semi-elastic structures which satisfy constraints like minimum intersection angle, interguide spacing and minimum radii for bends in integrated optic waveguides. Several practical constraints are imposed on the layout algorithm to ensure a realistic layout design.

Paper Details

Date Published: 5 January 1990
PDF: 12 pages
Proc. SPIE 1177, Integrated Optics and Optoelectronics, (5 January 1990); doi: 10.1117/12.963324
Show Author Affiliations
Subrat Kar, Indian Institute of Science (India)
A. Selvarajan, Indian Institute of Science (India)

Published in SPIE Proceedings Vol. 1177:
Integrated Optics and Optoelectronics
Leon McCaughan; Mark A. Mentzer; Song-Tsuen Peng; Henry J. Wojtunik; Ka Kha Wong, Editor(s)

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