In:
Microwave and Optical Technology Letters, Wiley, Vol. 55, No. 2 ( 2013-02), p. 236-238
Abstract:
A dual‐wavelength Erbium‐doped fiber laser (EDFL) is demonstrated using a 1.5‐m long EDF with a microfiber knot resonator (MKR) structure at the output end. The MKR is fabricated by heating and stretching a 3‐cm long piece of EDF to form a microfiber, which is then manipulated to create a knot. The performance of the EDFL is investigated for two different MKR loop diameters. At a loop diameter of 4 mm, dual‐wavelength laser is obtained at 1532.4 and 1556.0 nm with peak powers of −7.5 and −7.1 dBm and the corresponding optical signal‐to‐noise ratios of 22 and 32 dB, respectively. As the MKR diameter is reduced to 2 mm, the operating wavelength of laser shifts to a shorter wavelength, especially for the second lasing with a significant drop in output power due to the bending loss, which is more pronounced at smaller loop diameter. The slope efficiency of the EDFL drops from 0.55 to 0.09% as the MKR diameter decreases from 4 to 2 mm. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:236–238, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27292
Type of Medium:
Online Resource
ISSN:
0895-2477
,
1098-2760
Language:
English
Publisher:
Wiley
Publication Date:
2013
detail.hit.zdb_id:
2000574-X
