We demonstrate tunable spectral enhancement of the supercontinuum generated in a microstructured fiber with a fiber long-period grating. The long-period grating leads to phase distortion and loss that, with subsequent high-intensity propagation in uniform fiber, evolves into an enhancement around the grating’s resonant wavelengths. Wavelength tunability is achieved by varying the temperature or the ambient refractive index, and the spectral peak can be extinguished by immersing the grating in index-matching oil.
© 2007 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: February 6, 2007
Revised Manuscript: April 1, 2007
Manuscript Accepted: April 3, 2007
Published: June 5, 2007
Dong-Il Yeom, Jeremy A. Bolger, Graham D. Marshall, Dane R. Austin, Boris T. Kuhlmey, Michael J. Withford, C. Martijn de Sterke, and Benjamin J. Eggleton, "Tunable spectral enhancement of fiber supercontinuum," Opt. Lett. 32, 1644-1646 (2007)