Optical Spectrum Analyzer
There are devices for use in optical communications which are restricted to one or more telecom wavelength bands e g.
Optical spectrum analyzer. The c band or the full range from 1250 to 1700 nm. The ccd spectrometers use a diffraction grating to send light to a 1d line pixel array depending on which pixel receives light the ccd spectrometer. Japan optical spectrum analyzer anritsu s331l site master handheld s331l anritsu site master satellite spectrum analyzer price. An osa trace displays power in the vertical scale and the wavelength in the horizontal scale.
An optical spectrum analyzer or osa is a precision instrument designed to measure and display the distribution of power of an optical source over a specified wavelength span. An optical spectrometer spectrophotometer spectrograph or spectroscope is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum typically used in spectroscopic analysis to identify materials. Some spectrum analyzers are specialized for certain applications. Typically the resolution of a grating based osa is on the order of 0 08 nm which is about 10 ghz in the 1550 nm wavelength window.
Some high resolution spectrum analyzers are made for specific applications in spectroscopy for example in raman spectroscopy and fluorescence spectroscopy. Optical spectrum analyzer based on scanning fpi is a popular optical instrument for its superior spectral resolution. The variable measured is most often the light s intensity but could also for instance be the polarization state. An optical spectrum analyzer uses reflective or refractive techniques to separate out the wavelengths of light.