Double-pass configuration to enhance the sensitivity of a polyelectrolyte-coated arc-induced long-period fiber grating

References

• Korposh S, James SW, Lee SW, et al. Fiber optic long period grating sensors with a nanoassembled mesoporous film of SiO2 nanoparticles. Opt. Exp. 2010;18:13227–13228.10.1364/OE.18.013227
   PubMed Web of Science ®Google Scholar
• Smietana M, Bock WJ, Mikulic P, Chen J. Increasing sensitivity of arc-induced long-period gratings – pushing the fabrication technique toward its limits. Meas. Sci. Technol. 2011;22:1–6.
   Web of Science ®Google Scholar
• Zhu T, Shi L, Liu M, Huang W. Sensing and demodulation of special long-period fiber gratings induced by scanning CO2 laser pulses. J. Sensors. 2012;539095:1–17.10.1155/2012/539095
   Web of Science ®Google Scholar
• Dragomir A, Nikogosyan DN, Ruih AA, Zagorul’ko KA, Kryukov PG. Long period fibre grating formation with 264 nm femtosecond radiation. Elect. Lett. 2002;38:269–271.10.1049/el:20020184
   Web of Science ®Google Scholar
• James SW, Tatam RP. Optical fibre long-period grating sensors: characteristics and application. Meas. Sci. Technol. 2003;14:R49–R61.10.1088/0957-0233/14/5/201
   Web of Science ®Google Scholar
• Savin S, Digonnet MJF, Kino GS, Shaw HJ. Tunable mechanically induced long-period fiber gratings. Opt. Lett. 2000;25:710–712.10.1364/OL.25.000710
   PubMed Web of Science ®Google Scholar
• Wang DY, Wang Y, Gong J, Wang A. Fully distributed fiber-optic hydrogen sensing using acoustically induced long-period grating. IEEE Photonics. Technol. Lett. 2011;23:733–735.10.1109/LPT.2011.2131644
   Web of Science ®Google Scholar
• Sakata H, Yamahata K, Wakamiya K, Magnetic-force-induced tunable long-period fibre grating and its application in erbium-doped fibre systems. 2013 Conference on Lasers and Electro-Optics – Int. Quantum Electronics Conference (2013 CLEO-IQEC); 2013 May 12–16. Munich, Germany.
   Google Scholar
• Bock WJ, Chen J, Mikulic P, Eftimov T. A novel fiber-optic tapered long-period grating sensor for pressure monitoring. IEEE Trans. Instrum. Meas. 2007;56:1176–1180.10.1109/TIM.2007.899904
   Web of Science ®Google Scholar
• Erdogan T. Cladding-mode resonances in short- and long- period fiber grating filters. J. Opt. Soc. Am. A. 1997;14:1760–1773.10.1364/JOSAA.14.001760
   Google Scholar
• Amit S. Study of modeling aspects of long period fiber grating using three-layer fiber geometry. Photon. Sensors. 2015;5:32–42.
   Web of Science ®Google Scholar
• Michel M. Propagation in doubly clad single-mode. IEEE Trans. Microwave Theory Tech. 1982;30:381–388.
   Google Scholar
• Allsop T, Floreani F, Jedrzejewski KP,et al. Spectral characteristics of tapered LPG device as a sensing element for refractive index and temperature. J. Lightwave Technol. 2006;24:870–878.10.1109/JLT.2005.862426
   Web of Science ®Google Scholar
• Iadicicco A, Campopiano S, Giordano M, Cusano A. Spectral behavior in thinned long period gratings: effects of fiber diameter on refractive index sensitivity. Appl. Opt. 2007;46:6945–6952.10.1364/AO.46.006945
   PubMed Web of Science ®Google Scholar
• Martinez-Rios A, Monzon-Hernandez D, Torres-Gomez I. Highly sensitive cladding-etched arc-induced long-period fiber gratings for refractive index sensing. Opt. Commun. 2010;283:958–962.10.1016/j.optcom.2009.10.108
   Web of Science ®Google Scholar
• Rees ND, James SW, Tatam RP. Optical fiber long-period gratings with Langmuir–Blodgett thin-film overlays. Opt. Lett. 2002;27:686–688.10.1364/OL.27.000686
   PubMed Web of Science ®Google Scholar
• Villar ID, Achaerandio M, Matías IR, Arregui FJ. Deposition of overlays by electrostatic self-assembly in long-period fiber gratings. Opt. Lett. 2005;30:720–722.10.1364/OL.30.000720
   PubMed Web of Science ®Google Scholar
• Gu Z, Xu Y. Design optimization of a long-period fiber grating with sol–gel coating for a gas sensor. Meas. Sci. Technol. 2007;18:3530–3536.10.1088/0957-0233/18/11/037
   Web of Science ®Google Scholar
• Cusano A, Pilla P, Contessa L, et al. High sensitivity optical chemosensor based on coated long-period gratings for sub-ppm chemical detection in water. Appl. Phys. Lett. 2005;87:234105.10.1063/1.2136437
   Web of Science ®Google Scholar
• Ishaq IM, Quintela A, James SW, Ashwell GJ, Lopez-Higuerab JM, Tatam RP. Modification of the refractive index response of long period gratings using thin film overlays. Sens. Actuators B. 2005;107:738–741.10.1016/j.snb.2004.12.004
   Web of Science ®Google Scholar
• Smietana M, Korwin-Pawlowski ML, Bock WJ, Pickrell GR, Szmidt J. Refractive index sensing of fiber optic long-period grating structures coated with a plasma deposited diamond-like carbon thin film. Meas. Sci. Technol. 2008;19:085301.10.1088/0957-0233/19/8/085301
   Web of Science ®Google Scholar
• Cusano A, Iadicicco A, Pilla P, et al. Cladding mode reorganization in high-refractive-index coated long-period gratings: effects on the refractive-index sensitivity. Opt. Lett. 2005;30:2536–2538.10.1364/OL.30.002536
   PubMed Web of Science ®Google Scholar
• Li Q, Qian Y, Yu Y, Wu G, Sui Z, Wang H. Actions of sodium nitrite on long period fiber grating with self-assembled polyelectrolyte films. Opt. Commun. 2009;282:2446–2450.10.1016/j.optcom.2009.03.007
   Web of Science ®Google Scholar
• Yong YT, Lee SC, Rahman FA. Sensitization of hybrid LPFG-FBG refractometer using double-pass configuration. Opt. Commun. 2015;338:590–595.10.1016/j.optcom.2014.11.054
   Web of Science ®Google Scholar
• Han Y. Dependence of the refractive index of a coating on a long-period fiber grating on the initial coupling strength. J. Korean Phys. Soc. 2009;55:2621–2624.
   Web of Science ®Google Scholar