High speed optical receiver implemented in one chip
First Claim
1. An optical receiver which receives an optical signal, converts the optical signal into a current signal and digitizes the current signal, comprising:
- a current/voltage converter which converts the current signal into a differential voltage signal and outputs the converted voltage signal as a conversion voltage signal;
a DC remover which removes DC components from the converted voltage signal;
an amplifier which amplifies the output signal of the DC remover and outputs the amplified signal; and
a level converter which converts the level of the output signal of the amplifier into a CMOS level and then outputs the output signal of the amplifier as the data, wherein the current/voltage converter, the DC remover, the amplifier and the level converter are implemented in one chip.
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Accused Products
Abstract
An optical receiver receives a current signal from an optical receiving diode which receives an optical signal, and converts the optical signal into the current signal. The optical receiver includes a current/voltage converter, a DC remover, an amplifier and a level converter implemented in a single chip. The current/voltage converter converts the current signal into a voltage signal and outputs the differential voltage signal as a conversion voltage signal. The DC remover removes DC components from the conversion voltage signal. The amplifier amplifies the output signal of the DC remover and then outputs the amplified output signal of the DC remover. The level converter converts the level of the output signal of the amplifier into a CMOS level and then outputs the output signal of the amplifier as data. The current/voltage converter has a single input structure in which a current signal is input into one input terminal.
26 Citations
16 Claims
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1. An optical receiver which receives an optical signal, converts the optical signal into a current signal and digitizes the current signal, comprising:
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a current/voltage converter which converts the current signal into a differential voltage signal and outputs the converted voltage signal as a conversion voltage signal;
a DC remover which removes DC components from the converted voltage signal;
an amplifier which amplifies the output signal of the DC remover and outputs the amplified signal; and
a level converter which converts the level of the output signal of the amplifier into a CMOS level and then outputs the output signal of the amplifier as the data, wherein the current/voltage converter, the DC remover, the amplifier and the level converter are implemented in one chip. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An optical receiver which receives a current signal from an optical receiving diode, which converts an optical signal into the current signal, and digitizes the current signal, the optical receiver comprising:
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a current/voltage converter for converting the current signal into a differential voltage signal and outputting a converted voltage signal as a conversion voltage signal;
a DC remover for removing DC components from the conversion voltage signal;
an amplifier for amplifying an output signal of the DC remover and outputting an amplified signal; and
a level converter for converting a level of the output signal of the amplifier into a CMOS level, wherein the current/voltage converter has a single input structure in which the current signal is input to one input terminal. - View Dependent Claims (9, 10, 11, 12, 13, 14, 16)
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15. An optical receiver which receives a current signal from an optical receiving diode, which converts an optical signal into the current signal, and digitizes the current signal, the optical receiver comprising:
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a current/voltage converter;
a DC remover connected to the current/voltage converter;
an amplifier connected to the DC remover; and
a level converter connected to the amplifier, wherein the current/voltage converter has a single input structure in which a current signal is input to one input terminal.
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Specification