Recent Advances in Fiber Loop Ringdown Sensors

  • Tarun Kumar GangopadhyayEmail author
  • Jijo V. Ittiarah
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 194)


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.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2017

Authors and Affiliations

  1. 1. Fiber Optics and Photonics DivisionCSIR-Central Glass and Ceramic Research InstituteKolkataIndia

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