Kar, S and Selvarajan, A (1990) Generation of Ti:$LiNbO_3$ directional coupler based photonic switching architecture with optimal substrate real estate utilization. In: Integrated Optics and Optoelectronics, 5-8 Sep. 1989, Boston, MA, USA, pp. 111-122.
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Two computer aided design algorithms, PAD and PAL, are suggested for the design of Ti:$LiNbO_3$ directional coupler based photonic switching architectures. PAD (photonic architecture designer) generates higher order architecture by taking a lower 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.
| Item Type: | Conference Paper |
|---|---|
| Publisher: | SPIE - The International Society for Optical Engineering |
| Additional Information: | Copyright of this article belongs to SPIE - The International Society for Optical Engineering. |
| Department/Centre: | Division of Electrical Sciences > Electrical Communication Engineering |
| Date Deposited: | 16 Jan 2008 |
| Last Modified: | 17 Jan 2012 05:13 |
| URI: | http://eprints.iisc.ac.in/id/eprint/11260 |
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