5 January 1990 Generation of Ti:LiNbO3 Directional Coupler Based Photonic Switching Architectures With Optimal Substrate Real Estate Utilization
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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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Subrat Kar, Subrat Kar, A. Selvarajan, A. Selvarajan, } "Generation of Ti:LiNbO3 Directional Coupler Based Photonic Switching Architectures With Optimal Substrate Real Estate Utilization", Proc. SPIE 1177, Integrated Optics and Optoelectronics, (5 January 1990); doi: 10.1117/12.963324; https://doi.org/10.1117/12.963324
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