Halder, A and Paul, Mukul Chandra and Harun, S W and Ali, S M M and Saidin, N and Damanhuri, S S A and Ahmad, H and Das, Shyamal and Pal, Mrinmay and Bhadra, Shyamal Kumar (2012) 1880-nm broadband ASE generation with bismuth-thulium codoped fiber. IEEE Photonics Journal, 4 (6). pp. 2176-2181. ISSN 1943-0647

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Abstract

A broadband amplified spontaneous emission (ASE) generation in 1880-nm region is demonstrated by employing a newly developed single-mode Tm-Bi codoped fiber (TBF) in conjunction with 793-nm pumping for the first time. The TBF was obtained by drawing a preform, which was fabricated using a deposition of porous layer by the modified chemical vapor deposition (MCVD) process in conjunction with solution doping technique. The highest Bi3+ and Tm3+ concentrations of 0.35 wt.% and 0.9 wt.%, respectively, were successfully achieved to generate ASE centered at 1880-nm region. The ASE peaked at -47.2 dBm with 3-dB spectral width ranging from 1817 to 1984 nm with 1.0-m-long TBF and 200-mW 793-nm pump power, which was generated due to the transition of thulium ions from F-3(4) to H-3(6) with some assistance from bismuth to thulium ion energy transfer. The use of a secondary pump of 1550 nm is also shown to improve the ASE generation.

Item Type:	Article
Uncontrolled Keywords:	Bismuth-thulium codoped fiber; modified chemical vapor deposition (MCVD); 1.8-micron ASE source
Subjects:	Processing Science
Divisions:	Fiber Optics and Photonics
Depositing User:	Bidhan Chaudhuri
Date Deposited:	14 Jan 2013 11:34
Last Modified:	30 Jan 2013 11:30
URI:	http://cgcri.csircentral.net/id/eprint/1836

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