Table 3 Physical meaning and reference values of the constants mentioned
From: 45 km ROTDR with 0.5 m/0.11 °C via complex-domain square-wave width-chirp pulse compression
Constants | Physical meaning | Reference values |
|---|---|---|
h | Planck constant | 6.626 × 10−34 J·s |
kB | Boltzmann constant | 1.38 × 10−23 J·K−1 |
c | Light speed in a vacuum | 3 × 108 m·s−1 |
n | Refractive index of SMF | 1.5 |
Ka | Raman anti-Stokes signal coefficient | 3.066 × 10−9 |
Δν | Raman frequency shift | 13.2 THz |
α0+ αs | Transmission loss | 1.18 dB·km−1 |
λ | Raman anti-Stokes signal wavelength | 1450 nm |
