As a key component in fiber-optic communication systems, optical modules convert electrical and optical signals. This solves the signal attenuation and interference issues associated with traditional cable communications, ensuring efficient, long-distance signal transmission within fiber-optic networks.

Coherent optical modules utilize the principle of coherent light (light waves with identical frequencies and fixed phase relationships in optics) for signal transmission and processing. They support complex modulation, demodulation, and signal processing functions, offer high signal-to-noise ratios, and robust interference resistance, making them suitable for long-distance, high-capacity optical communication systems.