4 May 2012 Modeling of a compact and completely non-blocking 4 × 4 multimode interference switch for optical communication applications
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Abstract
Modelling of a compact and completely non-blocking 4×4 optical switch utilizing integrated multi-mode interference (MMI) waveguides with a channel profile of Ti-indiffused Lithium Niobate is described. Design novelty lies in its satisfactory operation for two wide optical windows (100 nm each), with center wavelengths (λcentre) of 1.3 and 1.55 µm, possessing low losses. For either of these windows, the average value of propagation losses are maintained lower than 1 dB with a vacillation of extremely low polarization dependent losses ( ≤ 0.15 dB). Index tuned regions are optimized to achieve average crosstalk levels better than -19 and -12 dB for its operation in the wavelength range of 1.25 to 1.35 µm and 1.50 to 1.60 µm, respectively. It is also observed that switch possess absolute loss uniformity (of the range of 0.5% to 1.6%) with a maximum of ±2.5% tolerance in the structural parameters.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
Ghanshyam K. Singh, Abhishek Goyal, Rajendra Prasad Yadav, Vijay Janyani, "Modeling of a compact and completely non-blocking 4 × 4 multimode interference switch for optical communication applications," Optical Engineering 51(5), 055002 (4 May 2012). https://doi.org/10.1117/1.OE.51.5.055002 . Submission:
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