Reflective Optical Fiber Refractometer Based on Long-Period Grating Tailored Active Bragg Grating
2015 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 27, no 11, 1173-1176 p.Article in journal (Refereed) Published
A reflective optical fiber refractometer based on a long-period grating (LPG) followed by an active fiber Bragg grating (AFBG) is proposed. The AFBG is inscribed in a short section of cobalt-doped optical fiber, which can be heated by pump laser and acts as a sensing signal indicator. The LPG functions as a bridge between the surrounding refractive index (RI) and the AFBG reflection, tailoring the power of pump laser for heating. Experimental results demonstrate that the wavelength response of this fiber grating-based reflective refractometer can be easily adjusted, and a significantly improved sensitivity within the RI range from 1.3403 to 1.4654 has been achieved.
Place, publisher, year, edition, pages
2015. Vol. 27, no 11, 1173-1176 p.
Reflective optical fiber refractometer, active Bragg grating, long-period grating
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-168686DOI: 10.1109/LPT.2015.2414351ISI: 000354457400009ScopusID: 2-s2.0-84929313842OAI: oai:DiVA.org:kth-168686DiVA: diva2:818209
QC 201506082015-06-082015-06-082015-06-08Bibliographically approved