caa a22 4500 44537196X CHVBK 20180317142950.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s00340-010-4179-3 doi (NATIONALLICENCE)springer-10.1007/s00340-010-4179-3 Broad tunability of erbium-doped fiber ring laser based onfew-mode polarization maintaining fiber Sagnac interferometer [Elektronische Daten] [G. Sun, Y. Hu, Y. Zhou, Y. Chung] A highly stable erbium-doped fiber (EDF) ring laser with broad tunability is proposed and experimentally demonstrated. It is accomplished by using a few-mode polarization maintaining fiber (FM-PMF) Sagnac interferometer, in which simultaneous Sagnac and modal interferences occur. Continuously tunable output is obtained by exerting the longitudinal strain on the FM-PMF in combination with adjusting a polarization controller (PC) next to the FM-PMF in the Sagnac interferometer. In addition, the adverse impact of uneven EDF gain distribution on the laser output power uniformity may be offset by the PC-dependent transmission loss of the FM-PMF Sagnac interferometer and reflected backward C-band amplifier spontaneous emission from the pumped EDF. During the whole tuning process, the tunable span covers more than 40 nm with the output power flatness better than 1 dB, 3 dB spectral linewidth narrower than 0.1 nm and optical signal-to-noise extinction ratio higher than 45 dB. Springer-Verlag, 2010 Sun G. Department of Physics, Shantou University, 515063, Shantou, Guangdong, P.R. China aut Hu Y. Department of Physics, Shantou University, 515063, Shantou, Guangdong, P.R. China aut Zhou Y. Department of Physics and Electronic Information Engineering, Minjiang University, 350108, Fuzhou, Fujian, P.R. China aut Chung Y. Department of Information and Communications, Gwangju Institute of Science and Technology, 500-712, Gwangju, Korea aut Applied Physics B Springer-Verlag 102/3(2011-03-01), 589-594 0946-2171 102:3<589 2011 102 340 https://doi.org/10.1007/s00340-010-4179-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-010-4179-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sun G. Department of Physics, Shantou University, 515063, Shantou, Guangdong, P.R. China aut NATIONALLICENCE 700 1- Hu Y. Department of Physics, Shantou University, 515063, Shantou, Guangdong, P.R. China aut NATIONALLICENCE 700 1- Zhou Y. Department of Physics and Electronic Information Engineering, Minjiang University, 350108, Fuzhou, Fujian, P.R. China aut NATIONALLICENCE 700 1- Chung Y. Department of Information and Communications, Gwangju Institute of Science and Technology, 500-712, Gwangju, Korea aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 102/3(2011-03-01), 589-594 0946-2171 102:3<589 2011 102 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer