Halder, A and Paul, Mukul Chandra and Shahabuddin, N S and Harun, S W and Saidin, N and Damanhuri, S S A and Ahmad, H and Das, S and Pal, Mrinmay and Bhadra, Shyamal Kumar (2012) Wideband spectrum-sliced ase source operating at 1900-nm region based on a double-clad ytterbium-sensitized thulium-doped fiber. IEEE Photonics Journal, 4 (1). pp. 14-18. ISSN 1943-0647

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Abstract

A wideband spectrum-sliced amplified spontaneous emission (ASE) source operating in 1900-nm region is demonstrated using a newly developed double-clad ytterbium-sensitized thulium-doped fiber (YTF) and a Sagnac loop mirror. The YTF used was drawn from a D-shape preform, which was fabricated using the modified chemical vapor deposition (MCVD) and solution doping technique. The YTF was pumped by a 980-nm multimode laser to generate an ASE at 1900 nm through the transition of thulium ion from (3)F(4) to (3)H(6) with the assistance of ytterbium to thulium ion energy transfer. The broadband ASE was spectral sliced by the loop mirror, which was constructed using a 3-dB coupler and a piece of polarization maintaining fiber (PMF). A wideband comb with channel spacing of 3.3 nm and an extinction ratio of 9 dB was achieved with a multimode pump power of 1 W within a wavelength range of more than 300 nm. The center of the comb spectrum was at 1888 nm with peak power of around -53 dBm.

Item Type:	Article
Uncontrolled Keywords:	Two-micrometer fiber laser; ytterbium thulium co-doped fiber; cladding pumping
Subjects:	Processing Science
Divisions:	Fiber Optics and Photonics
Depositing User:	Bidhan Chaudhuri
Date Deposited:	01 Jun 2012 06:21
Last Modified:	31 Jan 2013 11:15
URI:	http://cgcri.csircentral.net/id/eprint/1448

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