Recent Advances in Fiber Loop Ringdown Sensors
A review of recent trends in fiber loop ringdown spectroscopy (FLRDS) is presented. Various aspects of the chemical and physical sensing are discussed in detail. The comparison of time domain and frequency domain sensing is discussed. The pulsed laser source is used for time domain FLRDS and a sine modulated laser source is used for frequency domain method. In this chapter, sensing is demonstrated with the help of intensity modulated continuous laser in a fiber loop instead of a pulsed laser. Some experimental results are also presented from ringdown sensors.
The research work supported by the sponsored project (No. GAP0141) from DST, Govt. of India. The author would like to acknowledge the support of the Director, CGCRI, Dr. Mukul Paul, Dr. M. Pal and Dr. Shyamal Das of FOPD, CGCRI, Kolkata for their help.
- 1.Herbelin, J. M., McKay, J. A., Kwok, M. A., “Sensitive measurement of photon lifetime and true reflectances in an optical cavity by a phase-shift method.,” Appl. Opt. 19(1), 144–147, OSA (1980).Google Scholar
- 2.Stewart, G., Atherton, K., Yu, H., Culshaw, B., “An investigation of an optical fibre amplifier loop for intra-cavity and ring-down cavity loss measurements,” Meas. Sci. Technol. 12(7), 843–849, IOP Publishing (2001).Google Scholar
- 3.Bescherer, K., Barnes, J. A., Loock, H., “Absorption measurements in liquid core waveguides using cavity ring-down spectroscopy.,” Anal. Chem. 85(9), 4328–4334 (2013).Google Scholar
- 4.Gangopadhyay, T. K., Giorgini, A., Halder, A., Pal, M., Paul, M. C., Avino, S., Gagliardi, G., “Detection of chemicals using a novel fiber-optic sensor element built in fiber loop ring-resonators,” Sensors Actuators B Chem. 206, 327–335, Elsevier B.V. (2015).Google Scholar
- 5.Waechter, H., Litman, J., Cheung, A. H., Barnes, J. a., Loock, H.-P., “Chemical sensing using fiber cavity ring-down spectroscopy.,” Sensors (Basel). 10(3), 1716–1742 (2010).Google Scholar
- 6.Herath, C., Wang, C., Kaya, M., Chevalier, D., “Fiber loop ringdown DNA and bacteria sensors,” J. Biomed. Opt. 16(5), 050501 (2011).Google Scholar
- 7.Wong, W. C., Zhou, W., Chan, C. C., Dong, X., Leong, K. C., “Cavity ringdown refractive index sensor using photonic crystal fiber interferometer,” Sensors Actuators B Chem. 161(1), 108–113, Elsevier B.V. (2012).Google Scholar
- 8.Wang, C., Kaya, M., Wang, C., “Evanescent field-fiber loop ringdown glucose sensor.,” J. Biomed. Opt. 17, 037004 (2012).Google Scholar
- 9.Zhang, Y. N., Zhao, Y., Wu, D., Wang, Q., “Fiber loop ring-down refractive index sensor based on high-Q photonic crystal cavity,” IEEE Sens. J. 14(6), 1878–1885 (2014).Google Scholar
- 10.Zhao, Y., Chang, J., Ni, J., Wang, Q., Liu, T., Wang, C., Wang, Peng, G., “Novel gas sensor combined active fiber loop ring-down and dual wavelengths differential absorption method,” Opt. Express 22(9), 11244 (2014).Google Scholar
- 11.Wu, D., Zhao, Y., Wang, Q., “SMF Taper Evanescent Field-Based RI Sensor Combined with Fiber Loop Ring Down Technology,” IEEE Photonics Technol. Lett. 27(17), 1802–1805 (2015).Google Scholar
- 12.Ittiarah, J. V., Sidhik, S., Gangopadhyay, T. K., “Refractometry using evanescent field based fiber loop ringdown spectroscopy,” Sensors Actuators A Phys. 223, 61–66, Elsevier B.V. (2015).Google Scholar