Title :
A broadly tunable wavelength-selectable WDM source using a fiber Sagnac loop filter
Author :
Libatique, N.J.C. ; Jain, R.K.
Author_Institution :
Center for High Technol. Mater., Albuquerque, NM, USA
Abstract :
We describe a new discretely wavelength-selectable 1.5-μm source based on the use of a fiber Sagnac loop filter leading to the possibility of an efficient all-fiber source. The filter has an /spl sim/1.6-dB insertion loss, 14-dB peak-to-valley transmission ratios, and can be tuned to a very precise match with the International Telecommunications Union-wavelength-division-multiplexing grid. We demonstrate 25-channel outputs with precise 50-GHz channel spacings and very large (65 dB) output signal to background noise ratios.
Keywords :
optical fibre amplifiers; optical fibre filters; optical noise; optical tuning; telecommunication channels; wavelength division multiplexing; 1.5 micron; 1.6 dB; all-fiber source; broadly tunable wavelength-selectable WDM source; channel spacings; discretely wavelength-selectable 1.5-/spl mu/m source; fiber Sagnac loop filter; insertion loss; output signal to background noise ratios; peak-to-valley transmission ratios; wavelength-division-multiplexing grid; Bragg gratings; Erbium-doped fiber lasers; Fiber gratings; Insertion loss; Optical fiber filters; Optical fiber polarization; Sagnac interferometers; Semiconductor lasers; Tunable circuits and devices; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
