NDLI: Tunable and sensitive biophotonic waveguides based on photonic-bandgap microcavities

Content Provider	IEEE Xplore Digital Library
Author	Ching Eng Png Jin Sun Er Ping Li
Copyright Year	2006
Description	Author affiliation: Institute of High Performance Computing, Singapore, 1 Science Park Road, #01-01 The Capricorn, Singapore Science Park 2, Singapore 117528, Email: pngce@ihpc.a-star.edu.sg (Ching Eng Png)
Abstract	This paper presents a theoretical study of active one-dimensional (1-D) silicon photonic bandgap waveguides. To the best of our knowledge, we provide for the first time, a systematic study of the various physical parameters that can affect the Q factor and transmission properties in such waveguides. In order to make this technology viable, the waveguides must be tunable, have low attenuation, possess high Q factor, and can be switched. Can these be achieved simultaneously without changing the device width and height dimensions? Furthermore, can we meet these aims without placing unrealistic demands in fabrication? The electrical switching of this device is implemented using a p-i-n optical diode. The diode is predicted to require a ON state power of 81 nW with rise and fall times of 0.2 ns and 0.043 ns respectively. The length of the microcavity and the diameter of the air holes are finely tuned with reference to the Q factor and transmission. It will be shown that for certain desired resonant wavelength, the Q factor and transmission properties can be optimized by tuning the length of the cavity and the diameter of the two inner most air holes. This method allows ease of fabrication by not having to vary the waveguide width and height to obtain the tuning effects. Optical simulation was performed using 3-D finite difference time domain (FDTD) simulation method.
Starting Page	249
Ending Page	253
File Size	158903
Page Count	5
File Format	PDF
ISBN	0780393570
DOI	10.1109/NANOEL.2006.1609723
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-10
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Biomedical optical imaging Q factor Optical device fabrication Optical attenuators Biophotonics Microcavities Optical sensors Optical tuning P-i-n diodes Optical waveguides
Content Type	Text
Resource Type	Article

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