Optical characteristics of devices with coupled waveguides utilizing semiconductor heterostructures

An analysis is made of the laws governing the propagation of optical radiation in a semiconductor heterostructure with coupled waveguides in the presence of amplification or absorption. A method is developed for the calculation of the transfer functions describing the operation of various systems (optical amplifier, photodetector, laser) using similar structures. The influence of the spread of the parameters of the waveguide layers on the operating characteristics of these systems is assessed.