CVI Improves DWDM Polarizers and Waveplates.Business Editors/High-Tech Writers ALBUQUERQUE, N.M.--(BUSINESS WIRE)--Jan. 29, 2001 CVI CVI C (Language) Virtual Instrument CVI Clinical and Vaccine Immunology (journal) CVI Chronic Venous Insufficiency CVI Coastal Vulnerability Index CVI Canaan Valley Institute Laser's Polarizing Beamsplitter Cubes have an improved extinction ratio In telecommunications, extinction ratio ( r e ) is the ratio of two optical power levels, of a digital signal generated by an optical source, e.g., a laser diode, where P 1 greater than 1000:1, augmenting the fiber optic market with even more DWDM (Dense WDM) The term given to wavelength division multiplexing (WDM) when significantly more channels were being added. Since WDM is increasingly more "dense" all the time, both terms are used synonymously. See WDM. DWDM - wavelength division multiplexing versatility. Ranging from 1529nm to 1565nm in wavelength, CVI's Polarizing Beamsplitter Cubes supply 30dB C-band extinction ratio and less than -0.2dB insertion loss The amount of loss attributed to a particular device being used in (inserted into) the system. For example, a circuit added to filter out unwanted frequencies may reduce the output current by some amount. See injection loss. . Using proprietary CVI thin film technology, they are especially effective as C-band, L-band, 1300nm band, EDFA (Erbium-Doped Fiber Amplifier) A device that boosts the signal in an optical fiber. Introduced in the late 1980s, the EDFA was the first successful optical amplifier. variable attenuators, and optical isolators when combined with First Order Waveplates. They can also be used in many other DWDM applications, including EDFA optical amplifier A device that boosts light signals in an optical fiber network. Unlike regenerators, which have to convert light to electricity in order to amplify it and then convert it back again to light, the optical amplifier amplifies the light signal itself. pumping, beam combining, and beamsplitting. CVI's First Order Waveplates are 1/2 or 1/4 wavelength polarization retarders used in DWDM systems, variable attenuators, and isolators. Providing the lowest temperature sensitivity available, an epoxy free, ultra thin design renders a C-band retardation tolerance of 1/100 wavelength. They also have a damage threshold of 10 J/squared cm and are available for L band, 1300nm band, and EDFA wavelengths. Polarizing Beamsplitter Cubes as well as low insertion loss First Order and Zero Order configurations are available in numerous dimensions from 1mm to 50mm to meet your DWDM system requirements. All CVI communication bands, high reflectors, beamsplitters, and anti-reflection coatings can be deposited on micro ends as well as fiber ends. |
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