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Title: Design of an on-chip Fourier transform spectrometer using waveguide directional couplers and NEMS
Authors: Liang, L. 
Chenyu, P.
Yi, Q.
Guangcan, Z.
Qifeng, Q. 
Fook Siong, C. 
Guangya, Z. 
Issue Date: 2018
Publisher: OSA - The Optical Society
Citation: Liang, L., Chenyu, P., Yi, Q., Guangcan, Z., Qifeng, Q., Fook Siong, C., Guangya, Z. (2018). Design of an on-chip Fourier transform spectrometer using waveguide directional couplers and NEMS. Optics Express 26 (23) : 30362-30370. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: A novel concept of on-chip Fourier transform spectrometer is proposed. It consists of semiconductor waveguide directional couplers and NEMS actuators. The optical path difference can be tuned by controlling the NEMS actuators to couple or decouple the directional couplers. With 9 stages of directional couplers, we demonstrate numerically that the spectral resolution can reach up to 4 nm in 1.5 ?m to 1.8 ?m wavelength range. Further enhancement can be achieved by increasing the number of integrated NEMS driven directional couplers. This design meets the requirement of small size, weight and power and may be useful in future on-chip spectroscopic sensors. © 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.
Source Title: Optics Express
ISSN: 1094-4087
DOI: 10.1364/OE.26.030362
Rights: Attribution 4.0 International
Appears in Collections:Staff Publications

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