Optimal detuning combinations in a series coupled silicon micro ring resonator thermo optic-wavelength selective switch

Patinharekandy Prabhathan; Vadakke M. Murukeshan; Jing Zhang

doi:10.1117/1.OE.51.4.044604

16 April 2012 Optimal detuning combinations in a series coupled silicon micro ring resonator thermo optic-wavelength selective switch

Patinharekandy Prabhathan, Vadakke M. Murukeshan, Jing Zhang

Author Affiliations +

Optical Engineering, Vol. 51, Issue 4, 044604 (April 2012). https://doi.org/10.1117/1.OE.51.4.044604

Abstract

Series coupled triple ring resonators are designed and fabricated on a SOI platform as a thermo-optic wavelength selective switch (TO-WSS) having individual ring resonance tunability and narrow band, flat-top spectrum with high channel isolation. Optimal detuning combinations of the ring resonators are identified in the WSS to achieve an effective OFF state with high channel extinction, low switching cross talk, and low loss of OFF state. It is observed that detuned OFF states with a single ring which is adjacent to the input bus waveguide and two rings which are adjacent to the drop waveguide, are more effective for the highest channel extinction, lowest switching cross talk, and zero loss of OFF state in the WSS. A maximum channel extinction of 22 dB, lowest switching cross talk of −30 dB, and a zero loss of OFF state is achieved with a single ring detuned OFF state using a switching power of 48 mW.

Citation Download Citation

Patinharekandy Prabhathan, Vadakke M. Murukeshan, and Jing Zhang "Optimal detuning combinations in a series coupled silicon micro ring resonator thermo optic-wavelength selective switch," Optical Engineering 51(4), 044604 (16 April 2012). https://doi.org/10.1117/1.OE.51.4.044604

Published: 16 April 2012

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