What is the carrier frequency for an optical communication system operating at 1.55 llm?

The carrier frequency for an optical communication system operating at a wavelength of 1.55 micrometers (μm) can be calculated using the formula ( f = \frac{c}{\lambda} ), where ( c ) is the speed of light (approximately ( 3 \times 10^8 ) m/s) and ( \lambda ) is the wavelength in meters. Converting 1.55 μm to meters gives ( 1.55 \times 10^{-6} ) m. Thus, the carrier frequency is approximately ( 1.93 \times 10^{14} ) Hz, or 193 THz.