Optical transmission system for analog electro optical modulator for modulating an optical signal out double by an electrical signal, optical device.Optical coherent receiver for receiving a signal containing information consistent, and process to reduce the delay of relative phase in a planar wave guide coupler

摘要

"The system of analog optical transmission, electro optical modulator for modulating an optical signal out double by an electrical signal, optical device.Optical coherent receiver for receiving a signal containing information consistent, and process to reduce the delay of relative phase in a coupler waveguides glide. An electro optic modulator of double exit (100) to modulate an optical signal to an electrical signal (285), comprising a Mach Zehnder interferometer with a path inlet (102).Two arms (103, 104), and a directional coupler (105), in which the directional coupler comprises two waveguides in a planar substrate (101) with two inputs.Two outputs and a region of the coupling between the inputs and the outputs, in which the waveguides are in close proximity in order to cause coupling between them.The region of the coupling of the directional coupler comprises a region of strong coupling, and the length of the parallel sections of the waveguides optical coupling region is less than 35% d.The length of the region of strong coupling.