Junction-type photonic crystal waveguides for notch- and pass-band filtering
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2011-10-07Online Publication Date
2011-10-07Print Publication Date
2011-10-10Permanent link to this record
http://hdl.handle.net/10754/561663
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Evolution of the mode gap and the associated transmission mini stop-band (MSB) as a function of photonic crystal (PhC) waveguide width is theoretically and experimentally investigated. The change of line-defect width is identified to be the most appropriate way since it offers a wide MSB wavelength tuning range. A high transmission narrow-band filter is experimentally demonstrated in a junction-type waveguide composed of two PhC waveguides with slightly different widths. The full width at half maximum is 5.6 nm; the peak transmission is attenuated by only ∼5 dB and is ∼20 dB above the MSBs. Additionally, temperature tuning of the filter were also performed. The results show red-shift of the transmission peak and the MSB edges with a gradient of dλ/dT = 0.1 nm/°C. It is proposed that the transmission MSBs in such junction-type cascaded PhC waveguides can be used to obtain different types of filters. © 2011 Optical Society of America.Citation
Shahid, N., Amin, M., Naureen, S., Swillo, M., & Anand, S. (2011). Junction-type photonic crystal waveguides for notch- and pass-band filtering. Optics Express, 19(21), 21074. doi:10.1364/oe.19.021074Publisher
The Optical SocietyJournal
Optics Expressae974a485f413a2113503eed53cd6c53
10.1364/OE.19.021074