Optical receiving apparatus

Details Optical receiving apparatus Optical receiving apparatus

1995-09-12

1997-03-18

Chin, Wellington

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

250214A, 330 59, H04B 1006

Patent

active

056128100

ABSTRACT:
An optical receiving apparatus of the present invention comprises an opto-electric conversion element for converting an optical signal into an electric signal, a differential type preamplifier for sending a non-inverting phase signal and a inverting phase signal of the electric signal and a first and second peak hold circuits for holding peak values of the respective non-inverting and inverting phase signals. Further, the optical receiving apparatus of the present invention comprises a first adder for adding the inverting phase signal to the non-inverting phase peak signal from the first peak hold circuit and a second adder for adding the non-inverting phase signal to the inverting phase peak signal from the second peak hold circuit. Further, the optical receiving apparatus comprises a main amplifier including a differential amplifier having inputs supplied with outputs of the first and second adders and a comparator for outputting a binary signal correspondingly to a high and low levels of two output signals of the differential amplifier. The peak values of the non-inverting and inverting phase signals of the receiving signal are held and added by a feedforward connection.

REFERENCES:
patent: 5025456 (1991-06-01), Ota et al.

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