Abstract
This article shows a novel approach for Bragg gratings interrogation, based on vertical-cavity surface-emitting laser with high-contrast grating cavity. It is shown that with such a light source, one may achieve simultaneous wavelength sweeping together with output light intensity modulation enabled by a single element. In turn, it allows for designing a two-dimensional (time and wavelength) Bragg grating interrogation scheme. The article consists of analytical deliberations that determine the limiting factors of such an interrogation unit, i.e. interrogation speed and size of the sensing network for given Bragg grating reflectivity, expressed in the form of signal-to-noise ratio. Moreover, an experimental and numerical proof of concept of the sensing unit consisting of fiber Bragg grating sensors with an interrogation speed of 1 kHz and the use of code division multiplexing is also presented.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.