Patent ID: 6222951
Filing Date: 2001-04-24
Classification: G02B,H04B

Abstract:
An optical network unit, comprising:a silicon substrate;a silicon-on-insulator structure provided on said silicon substrate forming a waveguide;a first multi-layered structure, which is provided on a first portion of a top surface of said waveguide including bottom and top sets of layers, comprisinga photodetector section responsive to an incoming optical signal which is guided into said first multi-layered structure via a portion of said waveguide underlying said photodetector section for absorbing a portion of said guided optical signal and generating an electrical signal in response thereto while allowing a remaining unabsorbed portion of said guided optical signal to propagate through said photodetector section, anda modulator section;a second multi-layered structure provided on a second portion on top of said silicon substrate, said second multi-layered structure constituting an amplifier and an integrated circuit, wherein said modulator section is responsive to said applied electrical signal from said integrated circuit for modulating said remaining unabsorbed portion of said optical signal;means for electrically connecting said modulator section to said integrated circuit; andmeans for electrically connecting said photodetector section to said amplifier.