Patent ID: 6624918
Filing Date: 2003-09-23
Classification: H04B,H04J

Abstract:
An optical receiver arrangement comprisingan optoelectronic device for receiving an optical input signal and converting said optical input signal into an electrical current representation; a preamplifier coupled to the output of said optoelectronic device for amplifying the converted electrical current representation into an output voltage signal, said preamplifier coupled between one or more voltage supplies and ground potential, said preamplifier exhibiting a bandwidth that is a function of the value of said voltage supply; a digital controller coupled to the preamplifier and responsive to an externally supplied control signal, said digital controller for providing a digital bandwidth adjustment signal to said preamplifier, said digital bandwidth adjustment signal having a first value associated with increasing the preamplifier bandwidth and a second value associated with decreasing the preamplifier bandwidth; and an optical receiver for recovering a message signal from the output voltage generated by said preamplifier.