optical waveguide
Any structure having the ability to guide optical energy.
Note: Optical waveguides may be (a) thin-film deposits used in integrated optical circuits (IOCs) or (b) optical fibers.
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optically active material
A material that rotates the plane of polarization of light that passes through it.
optimum traffic frequency
Synonym FOT.
optimum transmission frequency
Synonym FOT.
optimum working frequency
Synonym FOT.
opto-electronic
Pertaining to any device that functions as an electrical-to-optical or optical-to-electrical transducer, or an instrument that uses such a device in its operation.
Note 1: Photodiodes, LEDs, injection laser diodes, and integrated optical circuit (IOC) elements are examples of opto-electronic devices commonly used in optical fiber communications.
Note 2: "Electro-optical" is often erroneously used as a synonym.
optoelectronic
See opto-electronic.
optoisolator
Synonym optical isolator.
OPX
Abbreviation for off-premises extension.
ORAN
Open Radio Access Network
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