Method and system for a narrowband, non-linear optoelectronic receiver

摘要

Methods and systems for a narrowband, non-linear optoelectronic receiver are disclosed and may include amplifying a received signal, limiting a bandwidth of the received signal, and restoring the signal utilizing a level restorer, which may include a non-return to zero (NRZ) level restorer. The NRZ level restorer may include a pulse-triggered bistable circuit, which may include two parallel inverters, with one being a feedback path for the other. The inverters may be single-ended or differential. A photogenerated signal may be amplified in the receiver utilizing a transimpedance amplifier and programmable gain amplifiers (PGAs). A received electrical signal may be amplified via PGAs. The bandwidth of the received signal may be limited utilizing one or more of: a low pass filter, a bandpass filter, a high pass filter, a differentiator, or a series capacitance on the chip. The signal may be received from a photodiode integrated on the chip.

主权项

1. A method for processing signals, the method comprising:
in a receiver on a chip,
amplifying a received signal that is generated from a received optical signal;limiting a bandwidth of said received signal utilizing a band pass filter that results in a narrow frequency band comprising a maximum data tone of the received signal; andrestoring said received signal utilizing a non-return to zero (NRZ) level restorer comprising a pulse-triggered bistable circuit, wherein said pulse-triggered bistable circuit comprises two parallel inverters, and wherein a first of said inverters comprises a feedback path for a second of said inverters.