Phys.org June 01, 2018
In optical fiber sensor networks a fiber Bragg grating is one of the key sensor devices used because of compactness and immunity to electromagnetic interference. But their sensitivity is not always satisfactory. Researchers in Japan have developed an inexpensive super spectral resolution method for multi-channel spectrometers to conventional interrogators for optical fiber sensing. The technology may find applications in IoT… read more. TECHNICAL ARTICLE
A spectroscopic instrument in the interrogator detects these changes. Credit: SPIE