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Dispersion Shifted Fiber is a type of single-mode optical fiber with a core-clad index profile tailored to shift the zero-dispersion wavelength from the natural in silica-glass fibers to the minimum-loss window.
Non-zero dispersion-shifted fiber (NZDSF), is a type of single-mode optical fiber which was designed to overcome the problems of dispersion-shifted fiber. NZDSF is available in two primary flavours: NZD+ and NZD-, which differ in their zero-dispersion wavelengths.
These are typically around fifteen hundred nanometers , respectively. Because the zero-dispersion point of NZDSF is outside of the normal communications window, four-wave mixing and other non-linear effects are minimized.
Other types of NZDSF include RS-NZDSF which has a reduced slope in its change of dispersion and large core NZDSF which further reduces residual non-linear distortion under high launch power.
New 5G optical network architecture requires high bandwidth and low latency. Therefore, the providers of fiber optic cables are all gearing up to meet the challenges to manufacture new 5G related products for 5G network deployment.
Innovative optical fibers have been introduced to serve 5G requirements from the core to access networks in recent years
The Global Non-zero dispersion-shifted fiber market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
Thorlabs’ DCF4 Non-Zero Dispersion-Shifted Fiber – Thorlabs’ DCF4 Non-Zero Dispersion-Shifted Fiber offers low attenuation and near-zero dispersion performance from 1530 nm to 1565 nm (C-band).
Compared to standard single mode fibers, DCF4 fiber features a low negative dispersion of -4.0 ps/nm•km at 1550 nm that allows it to be used alone as an effective solution to dispersion problems over short or medium lengths of fiber.
For systems with more stringent dispersion requirements at 1550 nm, the dispersion from DCF4 fiber can be compensated using shorter lengths of other fibers that have large positive dispersion at 1550 nm, such as our SMF-28-J9.
As the zero-dispersion wavelength is shifted outside of the C-band, four-wave mixing effects are minimized over the operating range of our DCF4 fiber (see the Dispersion Tutorial tab for more information). The large effective area of 65 µm2 allows the fiber to carry signals with high optical power without significant non-linear effects.
