The role of the optical transmitter is to convert the electrical signal into optical form, and launch the resulting optical signal into the optical fiber.
Components of optical transmitter
- optical source
- electrical pulse generator
- optical modulator
The optical fiber communication systemmainly includes a transmitter and receiver where the transmitter is located on one ending of a fiber cable & a receiver is located on the other side of the cable. The fiber optic transmitter uses sources based on several criteria’s like diodes, DFB laser, FP lasers, VCSEL, etc. The main function of these sources is to changes from an electrical signal to an optical signal. All these are semiconductor devices.