Analysis of temperature sensitivity of fibers with high nonlinear characteristics in Rayleigh backscattering based OTDR temperature sensor
OPTOELECTRONICS AND ADVANCED MATERIALS, RAPID COMMUNICATIONS, cilt.17, ss.484-489, 2023 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 17
- Basım Tarihi: 2023
- Dergi Adı: OPTOELECTRONICS AND ADVANCED MATERIALS, RAPID COMMUNICATIONS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex
- Sayfa Sayıları: ss.484-489
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Evet
Özet
This paper presents an investigation of different types of fibers for their compatibility in a Rayleigh based optical time domain reflectometer (R-OTDR) temperature sensor setup. A reference test setup consisting of standard single mode fiber (SMF) is observed to constitute a background for comparison. In this setup, the Rayleigh response of-50.25 dBm and a temperature sensitivity of 0.002 dB/°C is achieved. Then Rayleigh responses for highly nonlinear fiber (HNLF), dispersion shifted fiber (DSF) and polarization maintaining fiber (PMF) are observed. The Rayleigh responses were: HNLF had-39.83 dBm, DSF had-34.03 dBm and PMF had-31.34 dBm. Since PMF showed the best Rayleigh response it was selected to be observed as fiber under test (FUT) in a classical R-OTDR temperature sensor setup. With the PMF used in temperature R-OTDR setup a temperature sensitivity of 0.018 dB/°C was achieved. As a result, it has been determined that PMF fiber has high temperature sensitivity in R-OTDR installations compared to SMF. It has been shown that temperature measurements can be made on shorter lengths of fiber with a much simpler setup using PMF as opposed to the more complex alternatives.