Dual-rail nanobeam microfiber-coupled resonator

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A microfiber-coupled dual-rail nanobeam resonator is proposed and demonstrated. The dual-rail scheme is employed to encourage the overlap between the light emitter and the air mode. The one-dimensional resonant cavity is formed by contacting a curved microfiber with the dual-rail nanobeam. The finite width of the dual-rail nanobeam turns out to be advantageous for both out-coupling with the microfiber and broader tuning of resonant wavelength. By employing InGaAsP quantum well gain medium, a simple and robust reconfigurable laser is created. Experimentally we measure a quality factor of 11,000 and out-coupling efficiency of 30%. The spontaneous emission factor (beta) of the nanobeam laser is measured to be 0.16. Computationally we identified a resonant cavity with a quality factor over 6 x 10(5) and out-coupling efficiency over 90%. (c) 2013 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2013-03
Language
English
Article Type
Article
Citation

OPTICS EXPRESS, v.21, no.6, pp.6724 - 6732

ISSN
1094-4087
URI
http://hdl.handle.net/10203/173882
Appears in Collection
PH-Journal Papers(저널논문)
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