DISCRETELY TUNABLE FIBER RING LASER USING FBG TUNABLE FILTER AND MACH-ZEHNDER INTERFEROMETER

A discretely tunable Er-doped fiber-ring laser using a fiber Mach-Zehnder interferometer (MZI) and a tunable fiber Bragg grating (FBG) is proposed. In this scheme, the combination of MZI and FBG acts as a discrete wavelength selector. Analysis of its transmission function shows that discrete wavelength tuning can be realized, and experiments demonstrate 64 single-mode outputs with a mode spacing of 181.7 pm, and the output power is quite stable in the whole tuning range. (C) 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51 2595-2598, 2009; Published online in Wiley InterScience (www. interscience.wiley.com). DOI 10.1002/mop.24690

National Natural Science Foundation of China 60820106004 60536010605060066060601960777029National Basic Research Program of China 2006CB604902 G2006CB302806 2006dfa11880 2009AA03Z409 This work is supported in part by the National Natural Science Foundation of China under Grants 60820106004. 60536010 60506006 60606019 and 60777029,and in part by the National Basic Research Program of China under Grants 2006CB604902 G2006CB302806 2006dfa11880 and 2009AA03Z409.