How to adjust the wavelength of an optical module
Other techniques for achieving wavelength tunability include using synchrotron radiation sources, optical parametric oscillators, optical parametric amplifiers, Raman self-frequency shift in optical fibers, and dispersion-induced frequency sweeps. Whereas the article on tunable lasers discusses various types of lasers which have an adjustable output wavelength, this article explains several methods of wavelength tuning. The first method is to influence the laser gain medium in such a way that the wavelength of maximum gain is changed, and. This function can be configured only on ports where WDM optical modules are installed or pre-configured. Integrated-optical waveguides are able to guide light along a determined path analogue to optical fibre.
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