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  • Manually Tunable Filter

Photonics Spectra
May 2010
Yenista OpticsRequest Info
Yenista Optics SA has released the WSM-160, a benchtop manually tunable optical filter. It is used in optical manufacturing and laboratories to extract one channel from a dense wavelength division multiplexing signal or to cut adjacent amplified spontaneous emission noise. With a wavelength tuning range from 1495 to 1650 nm and a bandwidth tunable range from 0.25 to 80 nm, the filter allows engineers to extract channels with low insertion loss and no distortion of signal, thanks to its flattop shape. It is suitable for studying new modulation formats, cascaded reconfigurable optical add/drop multiplexers, high-bit-rate transmission, pulse shaping and optical parametric amplification.


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1. With respect to radiation, a device used to attenuate particular wavelengths or frequencies while passing others with relatively no change. 2. See digital filter.
pulse shaping
The use of variations in the power supplied to a laser to change the shape of the output pulse. The technique is used in laser welding, for example, to condition a surface by preheating it at a low power or to anneal a surface at low power after the high-power weld is completed.
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