Refractive index and temperature dependent displacementsof resonant peaks of long period grating inscribed in hydrogen loaded SMF-28 fiber

Libish T. M.; Bobby M. C.; Linesh J.; Mathew S.; Pradeep C.; N Nampoori V. P.; Radhakrishnan P.

doi:10.1007/s11801-012-1137-9

Journals >Optoelectronics Letters >Volume 8 >Issue 2 >Page 101 > Article

Optoelectronics Letters
Vol. 8, Issue 2, 101 (2012)

Refractive index and temperature dependent displacementsof resonant peaks of long period grating inscribed in hydrogen loaded SMF-28 fiber

Libish T. M.^1、2、*, Bobby M. C.¹, Linesh J.¹, Mathew S.¹, Pradeep C.¹, N Nampoori V. P.¹, and Radhakrishnan P.¹

Author Affiliations

¹International School of Photonics, Cochin University of Science and Technology, Cochin 682022, India

²S.C.T. College of Engineering, Trivandrum 695018, India

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DOI: 10.1007/s11801-012-1137-9 Cite this Article

T. M. Libish, M. C. Bobby, J. Linesh, S. Mathew, C. Pradeep, V. P. N Nampoori, P. Radhakrishnan. Refractive index and temperature dependent displacementsof resonant peaks of long period grating inscribed in hydrogen loaded SMF-28 fiber[J]. Optoelectronics Letters, 2012, 8(2): 101 Copy Citation Text

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Abstract

In this paper, the effects of refractive index (RI) of surrounding medium and ambient temperature on the transmission characteristics of a long period grating (LPG) are experimentally analyzed. The spectral behavior of LPG is investigated when the ambient index is higher or lower than that of the cladding material. The results show that the refractive index sensitivity of lower order attenuation bands is very low compared with that of the highest order attenuation band. But in the case of temperature, the lower order attenuation bands of the LPG can also exhibit good sensitivity like the higher-order bands.

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