Fibers and semiconductors of optical wavelengths beyond one micron have various applications in bio-medicine, chemical sensing, semiconductor processing, and communication networks and systems. In fiber optic communications, various methods of increasing the amount of signal that can be carried on a single fiber have been explored. For broadband wavelength division multiplexing (WDM), a spectrum-slicing scheme has been researched. While there are several means to obtain broad spectrum for slicing, schemes utilizing the nonlinear spectral broadening of an optically amplified pulse suffers from amplitude jitter. In longitudinal mode slicing schemes, the narrow spectral extent and non-uniform power distribution among modes hinder their application as broadband WDM sources.
Researchers at the University of Michigan have developed a method and system for stable, multi-wavelength continuous wave (CW) generation using fiber-based supercontinuum and spectrum-slicing of its longitudinal modes. The continuum generated is coherent and stable, making it an attractive alternative as a spectrally-sliced source for continuous, multiple wavelength channels. A 140 nm wide supercontinuum with a 10 GHz repetition rate is generated in