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Chromatic Dispersion
Light's differential group delay through a waveguide; ie. optical fiber.
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product
Chromatic Dispersion Emulator
CS-CDE
The ClearSpectrum™-CDE is a chromatic dispersion emulator suited for test and measurement. This 1U half 19-inch rack-mountable module is designed to emulate tens of thousands of picoseconds per nanometer in a compact unit while maintaining very low insertion loss. It is a passive, ready-to-use emulator which can be cascaded several times to achieve higher levels of dispersion.
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product
Measurement System
2800
The 2800 Chromatic Dispersion Measurement System provides fast, accurate measurements of chromatic dispersion and length of all types of single-mode optical fibers. Easy to use Windows-based software provides all industry standard calculation techniques for the determination of zero dispersion wavelength and dispersion slope. Options are available for the measurement of Polarization Mode Dispersion (PMD) and Fiber Strain.
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product
Refractive Index Profiler
S14
The S14 Refractive Index Profiler complements optical fiber preform analysis measurements by providing highly accurate and precise characterization of the refractive index profile of drawn single-mode, multimode, and specialty fibers using the RNF (Refracted Near Field) technique. The S14 index profile data produces fiber geometry information directly. Manufacturers can also use S14 data for the prediction of fiber transmission parameters such as mode field diameter, cut-off wavelength, and chromatic dispersion.
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product
Chromatic Dispersion Measurement System
CD500
The CD500 is a chromatic dispersion measurement system for use in fiber and cable manufacturing, designed to produce accurate measurements quickly and with confidence. The CD500 uses a temperature-stabilized solid-state monochromator driven by a digitally derived RF frequency signal that allows the wavelength to be set and maintained with picometer precision and stability. Using a digital approach and employing the latest in DSP technology, the CD500 yields fast low noise drift-free results.
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product
DQPSK Demodulator
Differential Quaternary Phase-Shift Keying (DQPSK) is the four-level version of DPSK. DQPSK transmits two bits for every symbol (bit combinations being 00, 01, 11 and 10) and has an additional advantage over conventional binary DPSK. DQPSK has a narrower optical spectrum, which tolerates more dispersion (both chromatic and polarization-mode), allows for stronger optical filtering, and enables closer channel spacing. As a result, DQPSK is the only modulation format which allows processing of 40Gb/s data-rate in a 50-GHz channel spacing system.
