Optical transmitter using a laser source.

Instrument measuring optical signal power.

High-speed pluggable optical transceiver format.

Vertical-cavity surface-emitting laser.

Tool using visible light to locate fiber faults.

Direct-attach copper networking cable.

Photodiode commonly used in optical receivers.

Instrument testing fiber using reflected optical pulses.

Active optical cable.

Avalanche photodiode used for sensitive optical detection.