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Manually Tunable Optical Filter

Photonics.com
Feb 2010
Yenista OpticsRequest Info
 
LANNION, France, Feb. 26, 2010 – 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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GLOSSARY
optical filter
A device with characteristics of selective transmittance, capable of passing a certain part of the electromagnetic spectrum while being opaque to the other portions. Means of producing filters varies considerably. Color filters (for the visual) usually consist of glass, gelatin or plastic containing dyes or pigments. Band pass filters are found in signal processing and are commonly fabricated via electronics and complex circuitry and are designed to pass and reject parts of the spectrum based...
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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