ZDSF (Zero Dispersion-Shifted Fiber)

A type of dispersion-shifted, single-mode fiber (DSF SMF)

that shifts the point of zero dispersion by increasing material dispersion to the point that it cancels out chromatic dispersion at 1550 nm, rather than 1310 nm. Dense Wavelength Division Multiplexing

(DWDM) and Erbium-Doped Fiber Amplifiers (EDFAs) both work in this higher window, which can create yet another noise problem in the form of four-wave mixing (FWM), a phenomenon by which wavelengths interact to create additional wavelengths.The EDFAs amplify those signals, and superimpose them on the DWDM channels. Non Zero Dispersion-Shifted Fiber (NZDF) addresses this issue by shifting the optimal dispersion point slightly above the range in which EDFAs operate. See also chromatic dispersion, cladding, core, dispersion, DSF, DWDM, EDFA, material dispersion, noise, NZDF, refractive index, SMF, wavelength, and window.

• or ITU-TSS)
• orthogonal
• orthogonal frequency division multiplexing (OFDM)
• oscillate
• oscillate
• oscillator
• oscillator
• OSI Reference Model (Open Systems Interconnection Model)
• OS (Operating System)
• OSPF (Open Shortest Path First)
• OSP (OutSide Plant)
• OSS (Operations Support System)
• Ostrofsky, Marc
• OTA (over the air)
• Other Common Carrier (OCC)
• OTN (Optical Transport Network)
• OTN (Optical Transport Network)
• OTU (Optical Transport Unit)
• OTU (Optical Transport Unit)
• out-of-band signaling and control
• out-of-phase
• outside plant (OSP)
• outside vapor deposition (OVD)
• outsourcing
• OVD (Outside Vapor Deposition)