Appendix A Term Description - Zte Unitrans ZXMP M600 Technical Instructions

Appendix A Term Description

A.1 G.652 Optical Fiber
1) G.652 A: It is applicable to a system lower than G.957, G.691 STM-16. It
2) G.652 B: It is applicable to a system higher than G.957 and G.691 STM-16 and it
3) G.652 C&D: It is applicable to a system lower than G.957, G.691 and G.692
G.652 single-mode optical fiber can be applied to 1300nm and 1550
wavelengths. When it is applied to 1300nm wavelength, the dispersion is about
zero. Therefore, it is the optimum single-mode optical fiber.
The nominal value of the mode field diameter of G652 single-mode fiber is
between 9 µm ~10 µm (the mode field diameter is a parameter unique to
single-mode fibers; it describes the distribution of the optical signals in the fiber
core). The cut-off wavelength λ
nm requirement in the 1300nm wavelength window (it describes the optical
wavelengths that can be transmitted in the single-mode optical fibers). Moreover,
the outer diameter of the cladding area of the single-mode diameter is 125 µm
±3 µm, while the attenuation coefficient is less than 1.0dB/km (for 1300 nm
wavelength area) or less than 0.5dB/km (for 1550 nm wavelength area).
At present, G.652 single-mode optical fibers that can be used for the SDH
development include G.652 A, G.652 B and G.652 C&D.
supports the single-channel SDH transmission system at the 2.5Gbit/s or a lower
rate and has no special requirement for the PMD coefficient of the intra-cable
fiber.
supports 10Gbit/s and, in some cases, 40Gbit/s transmission systems. Generally
it is required that the PMD coefficient of intra-cable fiber should be less than
0.5ps/km1/2.
STM-16 and can be full-wave optical fiber. For the detailed description of this
type, please refer to "full-wave optical fiber".
of the fiber conforms to the 1100nm<λ
C
A-1
<1280
C