Semiconductor drift photodetector for equalization of optical fiber material dispersion

摘要: An optical signal having a non-negligible bandwidth suffers distortion while propagating in an fiber caused by the fact that components of different wavelengths propagate at velocities through material, is, dependence refractive index upon wavelength (material dispersion). In order to compensate for this distortion, prism (or diffraction grating) is located path output wave exiting from fiber, which angularly separates various wavelengths. The separated waves are then incident semiconductor P-N junction detector charge carrier drift type, such time delays compensated carriers generated absorbed region semiconductor.