Receiver and transceiver for a digital signal of an arbitrary pa

Details Receiver and transceiver for a digital signal of an arbitrary pa Receiver and transceiver for a digital signal of an arbitrary pa

1996-03-29

1998-07-07

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

External effect

Light

327100, 327101, 327103, 327 58, 327563, H04L 2526

Patent

active

057775079

ABSTRACT:
An optical receiving circuit comprises a photodetector, a differential transimpedance amplifier, a peak detector, a resistor network circuit and a discriminator. The transimpedance amplifier receives a current pulse converted by the photo-detector and outputs a non-inverting voltage signal and an inverting voltage signal of the same level. A peak detector for detecting a peak value of the non-inverting voltage signal. A resistor network circuit make an additional operations between an output signal from the peak detector and the inverted voltage signal, and between the non-inverting voltage signal and the non-inverting voltage signal, thereby generating two complemental voltage signals, which have the same amplitude and cross each other at a middle point of the amplitude. The discriminator discriminates a crossing potential at which the two complemental voltage signals generated by the resistor network circuit and generates a pulse-shaped signal with a logical level whose state is changed to another logical state at the crossing potential.

REFERENCES:
patent: 5025456 (1991-06-01), Ota et al.
patent: 5386109 (1995-01-01), Ikeuchi et al.
Ota et al., "DC-1Gb/s Burst-Mode Compatible Receiver for Optical Bus Applications", Journal of Lightware Technology, 10(2):244-249(1992).
Nishikido et al., Demonstration of multigigabit optical interconnection using offset laser driving for a broadband switching network, OFC/IOOC'93 Technical Digest, pp. 168-169, (1993).

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