Modeling and performance analysis of single substrate based 1×4 digital optical switches

With this work, for the first time a detailed modeling and performance analysis is presented for a single substrate based 1×4 digital optical switches with a channel profile of proton exchanged Lithium Niobate. Performance of the switches are optimized by theoretical controlled modeling of proton exchanged channel waveguides, electrode placement and with use of low less bends to maintain transition losses at low levels. Proposed structures are evaluated using beam propagation method for a range of driving voltage (10V-22V), with utilization of excellent electro-optic properties of the proton exchanged Lithium Niobate waveguides. The computed results for their performance are in good agreement with previous published data.