Fiber optic lines and the associated fiber optic signals require transceivers to convert the optical light pulse signals to electronic signals which are usable by the computer. Fiber optic transceivers facilitate bi-directional data transmissions between electronic devices and optical data links in fiber optic systems. Fiber optic transceiver includes a transmitter optical subassembly and a receiver optical subassembly to send and receive the optical signals. An optical transmitter/receiver module typically includes both light emitting devices such as vertical cavity surface emitting lasers and light detecting devices such as photodiodes. A photodetector is used for converting optically encoded data received from an optical data link to electrically encoded data readable by a host electronic device. A laser diode converts electrically encoded data signals from the host electronic device that are converted into optical signals and transmitted to the optical data link.
