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16 December 1992 Numerical analysis of back scattered signal in infrared optical fibers
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Proceedings Volume 1622, Emerging Optoelectronic Technologies; (1992)
Event: Emerging OE Technologies, Bangalore, India, 1991, Bangalore, India
M. MukUndaraO Indian Institute of Technology Madras-600 036 V. C. RaVihaiidran and P. Mythill Anna University Madras-600 025 With the increasing use of fluoride fibres tor communication in the infrared region OTDR technique (1) has been extended conceptually for fluoride fibres in the wave length range 1. 5urn - 4urn. OH is found to be the rnajQr contributing factor whose possibility to be monitored by means of an OTDR- are discussed. I NTRODUCT I ON The most exciting prospect for optical fibres made from fluoride glasses is the possibility of prvoldlng long distance optical communication systems without the need for repeaters and amplifiers. ZrF4 baed glasses are pi''ominent in particu I ar 2 rF4-BaF2-LaF3-A I F3-NaF (2BLAN) offer good properties. Considering the various loss mechanisms the outcome is that fluoride based optical fibre exhibits a low loss window at 2. 53 urn with a theoritical minimum loss approaching 0. 04 dB/KM. Fluoride fibres can transmit both infrared and visibie light. They have many applications outside the field of telecommunications including opticai fibres sensors in remote infrared Spectroscopy'' iaser s''rgerv and ribre 119 lasers. Fluoride glass fibres have high transition temperature and refractive indices conpared to silica glass fibres. the of fluorides is that they have a high rate of crystallization which complicates the fibre fabrication process. The reported minimum loss has remained unchanged iP the 2. 5 pm windiw region
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mandavilli Mukunda Rao, Chenniappan Ravichandran, and P. Mythili "Numerical analysis of back scattered signal in infrared optical fibers", Proc. SPIE 1622, Emerging Optoelectronic Technologies, (16 December 1992);


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