Photodetector with improved signal-to-noise ratio
First Claim
Patent Images
1. A photodetector/receiver circuit comprising:
- a voltage source having a positive and a negative terminal;
a first resistor connected between said positive terminal and the cathode of a photodetector diode;
a second resistor substantially equal in resistance value to said first resistor, connected between said negative terminal and the anode of said photodetector diode;
said anode and cathode capacitively coupled, one to the inverting input of a differential amplifier, and the other to the noninverting input; and
the output of said differential amplifier comprising the output of said photodetector/receiver circuit.
0 Assignments
0 Petitions
Accused Products
Abstract
A novel photodetector circuit utilizing both the generated photovoltage, as well as its inverse, to improve the signal-to-noise ratio at the optical receiver output.
-
Citations
2 Claims
-
1. A photodetector/receiver circuit comprising:
-
a voltage source having a positive and a negative terminal; a first resistor connected between said positive terminal and the cathode of a photodetector diode; a second resistor substantially equal in resistance value to said first resistor, connected between said negative terminal and the anode of said photodetector diode; said anode and cathode capacitively coupled, one to the inverting input of a differential amplifier, and the other to the noninverting input; and the output of said differential amplifier comprising the output of said photodetector/receiver circuit. - View Dependent Claims (2)
-
Specification