1. Different meanings
Communication lines are cables that carry telephone calls, telegrams, fax documents, television and radio programs, data, and other electrical signals.
An optical fiber is a communication cable component that utilizes one or more optical fibers placed in a clad sheath as a transmission medium and can be used individually or in groups to meet optical, mechanical, or environmental performance specifications.
2. Composition is different
A communication cable consists of more than one pair of mutually insulated wires twisted together.
Optical fiber is mainly composed of optical fiber (thin glass wire such as hair) and plastic protective sleeve and plastic skin, there is no gold, silver, copper and aluminum and other metals in the optical cable, generally no recycling value. Optical fiber is a certain number of optical fibers in accordance with a certain way to form the cable core, the outer sheath, and some are also covered with an outer sheath.
3. Different transmission signals
Communication lines are electrical signals. Optical fiber transmission is a kind of communication line to realize optical signal transmission.