Photonic crystal ring resonator-based four-channel dense wavelength division multiplexing demultiplexer on silicon on insulator platform: design and analysis

Tupakula Sreenivasulu; Kaustav Bhowmick; Shafeek Abdul Samad; Thamerassery Illam Rameswaran Yadunath; Tarimala Badrinarayana; Gopalkrishna M. Hegde; Talabattula Srinivas

doi:10.1117/1.OE.57.4.046109

20 April 2018 Photonic crystal ring resonator-based four-channel dense wavelength division multiplexing demultiplexer on silicon on insulator platform: design and analysis

Tupakula Sreenivasulu, Kaustav Bhowmick, Shafeek Abdul Samad, Thamerassery Illam Rameswaran Yadunath, Tarimala Badrinarayana, Gopalkrishna M. Hegde, Talabattula Srinivas

Author Affiliations +

Optical Engineering, Vol. 57, Issue 4, 046109 (April 2018). https://doi.org/10.1117/1.OE.57.4.046109

Abstract

A micro/nanofabrication feasible compact photonic crystal (PC) ring-resonator-based channel drop filter has been designed and analyzed for operation in C and L bands of communication window. The four-channel demultiplexer consists of ring resonators of holes in two-dimensional PC slab. The proposed assembly design of dense wavelength division multiplexing setup is shown to achieve optimal quality factor, without altering the lattice parameters or resonator size or inclusion of scattering holes. Transmission characteristics are analyzed using the three-dimensional finite-difference time-domain simulation approach. The radiation loss of the ring resonator was minimized by forced cancelation of radiation fields by fine-tuning the air holes inside the ring resonator. An average cross talk of −34 dB has been achieved between the adjacent channels maintaining an average quality factor of 5000. Demultiplexing is achieved by engineering only the air holes inside the ring, which makes it a simple and tolerant design from the fabrication perspective. Also, the device footprint of 500 μm² on silicon on insulator platform makes it easy to fabricate the device using e-beam lithography technique.

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Tupakula Sreenivasulu, Kaustav Bhowmick, Shafeek Abdul Samad, Thamerassery Illam Rameswaran Yadunath, Tarimala Badrinarayana, Gopalkrishna M. Hegde, and Talabattula Srinivas "Photonic crystal ring resonator-based four-channel dense wavelength division multiplexing demultiplexer on silicon on insulator platform: design and analysis," Optical Engineering 57(4), 046109 (20 April 2018). https://doi.org/10.1117/1.OE.57.4.046109

Received: 20 October 2017; Accepted: 30 March 2018; Published: 20 April 2018

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