NDLI: Hollow core MOEMS Bragg grating microphone for distributed and remote sensing

Content Provider	IEEE Xplore Digital Library
Author	Reck, K. Ostergaard, C. Thomsen, E.V. Hansen, O.
Copyright Year	2011
Description	Author affiliation: DTU Nanotech, Technical University of Denmark, Kgs. Lyngby, DK-2800, Denmark (Reck, K.; Ostergaard, C.; Thomsen, E.V.; Hansen, O.)
Abstract	We present the design and fabrication of a completely new high sensitivity all-optical frequency modulated MOEMS microphone for distributed and remote sensing applications. Due to immunity to electromagnetic interference, no parasitic capacitances and easy wavelength division multiplexing (WDM) combined with the low transmission loss of modern optical fibers [1], frequency modulated optical sensors are ideal for remote and distributed sensing. While several all-optical and high sensitivity MOEMS pressure sensors are found in literature, these sensors are typically based on amplitude (intensity) modulation. Amplitude modulation is inherently sensitive to transmission loss and requires a unique transmission line for each sensor. Though fiber Bragg gratings (FBGs) are based on frequency modulation the relatively large dimensions of optical fibers and their low refractive index modulation makes them most suitable for high stress sensing, e.g. in structural health monitoring. The MOEMS microphone presented here has a calculated static pressure sensitivity approximately $10^{4}$ times larger than conventional FBGs [2,3].
Starting Page	586
Ending Page	589
File Size	1294806
Page Count	4
File Format	PDF
ISBN	9781457701573
e-ISBN	9781457701566
DOI	10.1109/TRANSDUCERS.2011.5969722
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-05
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bragg gratings Optical waveguides Refractive index Optical fiber sensors Temperature sensors microphone Optical sensing frequency modulation Bragg grating
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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