Optical transmitter and optical transmission method
First Claim
Patent Images
1. An optical transmitter, comprising:
- a plurality of light-emitting elements that transmits optical outputs having crosstalk parts arising from optical outputs of adjacent light-emitting elements;
a plurality of light-receiving elements that monitors said optical outputs from said light-emitting elements, converts said optical outputs into a plurality of photoelectric conversion currents, and outputs said plurality of photoelectric conversion currents;
a linear operation circuit that receives said plurality of photoelectric conversion currents from said plurality of light-receiving elements, removes said crosstalk parts from said plurality of photoelectric conversion currents to form optical output monitor signals, and outputs said optical output monitor signals; and
a drive circuit that receives said optical output monitor signals from said linear operation circuit and drives individually currents to apply to said light-emitting elements based on said optical output monitor signals,wherein said linear operation circuit solves a simultaneous linear equation
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Abstract
An optical transmitter and an optical transmission method includes a plurality of light-emitting elements, a plurality of light-receiving elements for monitoring optical outputs from the light-emitting elements, a linear operation circuit for calculating optical output monitor signals by removing crosstalk parts from a plurality of photoelectric conversion currents outputted from the light-receiving elements, and a drive circuit for driving individually currents to apply to the light-emitting elements based on the optical output monitor signals.
13 Citations
14 Claims
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1. An optical transmitter, comprising:
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a plurality of light-emitting elements that transmits optical outputs having crosstalk parts arising from optical outputs of adjacent light-emitting elements; a plurality of light-receiving elements that monitors said optical outputs from said light-emitting elements, converts said optical outputs into a plurality of photoelectric conversion currents, and outputs said plurality of photoelectric conversion currents; a linear operation circuit that receives said plurality of photoelectric conversion currents from said plurality of light-receiving elements, removes said crosstalk parts from said plurality of photoelectric conversion currents to form optical output monitor signals, and outputs said optical output monitor signals; and a drive circuit that receives said optical output monitor signals from said linear operation circuit and drives individually currents to apply to said light-emitting elements based on said optical output monitor signals, wherein said linear operation circuit solves a simultaneous linear equation - View Dependent Claims (2, 3, 4, 5, 6)
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7. An optical transmitter, comprising:
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a plurality of light-emitting elements that transmits optical outputs having crosstalk parts arising from optical outputs of adjacent light-emitting elements; a plurality of light-receiving elements that monitors said optical outputs from said light-emitting elements, converts said optical outputs into a plurality of photoelectric conversion currents, and outputs said plurality of photoelectric conversion currents; a linear operation circuit that receives said plurality of photoelectric conversion currents from said plurality of light-receiving elements, removes said crosstalk parts from said plurality of photoelectric conversion currents to form optical output monitor signals, and outputs said optical output monitor signals; and a drive circuit that receives said optical output monitor signals from said linear operation circuit and drives individually currents to apply to said light-emitting elements based on said optical output monitor signals, wherein; said light-emitting elements and said light-receiving elements are coupled optically so that an n-by-n matrix C=DA is a strictly diagonally dominant matrix
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8. A method for optical transmission, comprising:
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monitoring optical outputs from a plurality of light-emitting elements; calculating optical output monitor signals by removing crosstalk parts from a plurality of photoelectric conversion currents outputted from a plurality of light-receiving elements, the crosstalk parts arising from adjacent light-emitting elements; and driving individually currents to apply to said light-emitting elements based on said optical output monitor signals, said method further comprising; solving a simultaneous linear equation - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for optical transmission, comprising:
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monitoring optical outputs from a plurality of light-emitting elements; calculating optical output monitor signals by removing crosstalk parts from a plurality of photoelectric conversion currents outputted from a plurality of light-receiving elements, the crosstalk parts arising from adjacent light-emitting elements; and driving individually currents to apply to said light-emitting elements based on said optical output monitor signals, said method further comprising; coupling said light-emitting elements and said light-receiving elements optically so that an n-by-n matrix C=DA is a strictly diagonally dominant matrix
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Specification