Optical Design and Engineering

Super defect inside photonic crystal ring resonator to enhance Q factor

[+] Author Affiliations
Tupakula Sreenivasulu, Venkateswara Rao Kolli, Badrinarayana Tarimala, Srinivas Talabattula

Indian Institute of Science, Applied Photonics laboratory, Bengaluru, Karnataka 560012, India

Gopalkrishna Hegde, Mohan Sangineni

Indian Institute of Science, Centre for Nano Science and Engineering, Bengaluru, Karnataka 560012, India

Opt. Eng. 55(3), 035103 (Mar 18, 2016). doi:10.1117/1.OE.55.3.035103
History: Received December 4, 2015; Accepted February 26, 2016
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Abstract.  A design is proposed to enhance the quality factor of a photonic crystal ring resonator. A super defect is employed inside the ring resonator, which consists of variation of hole dimensions inside the ring resonator in such a way that the radiation field components of the resonant nanocavity are forced to get cancelled in order to reduce radiation loss. After this forced cancellation, the improved Q factor is calculated as 18,000. This photonic crystal ring resonator can be used for sensing applications like force sensing, pressure sensing, biochemical sensing, and communication applications like demultiplexing.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Tupakula Sreenivasulu ; Venkateswara Rao Kolli ; Badrinarayana Tarimala ; Gopalkrishna Hegde ; Mohan Sangineni, et al.
"Super defect inside photonic crystal ring resonator to enhance Q factor", Opt. Eng. 55(3), 035103 (Mar 18, 2016). ; http://dx.doi.org/10.1117/1.OE.55.3.035103


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