Precise calculation of wavelength and frequency conversion in optical communication
Input parameter
nm
nm
Result
THz
THz
cm⁻¹
This tool can convert the wavelength bandwidth Δλ at the central wavelength λ₀ into the central frequency, frequency bandwidth and wave number bandwidth.
Formulas：
V₀ = c / λ₀
V_start = c / (λ₀ + Δλ/2), V_stop = c / (λ₀ - Δλ/2)
ΔV = V_stop - V_start
Δk = 10⁷/λ₀ - 10⁷/(λ₀+Δλ)
Among：
c represents the speed of light；
Wavelength λ₀ and Δλ are measured in nm；
Frequency V₀, ΔV are measured in THz；
Wave number bandwidth Δk is measured in cm⁻¹。