SENSING APPARATUS
First Claim
1. A sensing apparatus comprising:
- a broadband optical source;
a first pseudorandom number generator generating a first pseudorandom number code string to modulate the broadband optical source;
at least one sensor reflecting an output of the first pseudorandom number generator at a wavelength corresponding to a center wavelength thereof when the output of the first pseudorandom number generator is inputted;
a wavelength-time converter converting an output of the sensor by wavelength-time conversion;
a second pseudorandom number generator generating a second pseudorandom number code string which is different in frequency from and is the same in bit length and code string as the first pseudorandom number code string;
a mixer mixing an output signal of the wavelength-time converter with an output signal of the second pseudorandom number generator; and
an integrator integrating an output of the mixer.
1 Assignment
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Accused Products
Abstract
A sensing apparatus includes: a broadband optical source; a first pseudorandom number generator generating a first pseudorandom number code string to modulate the broadband optical source; at least one sensor reflecting an output of the first pseudorandom number generator at a wavelength corresponding to a center wavelength thereof when the output of the first pseudorandom number generator is inputted; a wavelength-time converter converting an output of the sensor by wavelength-time conversion; a second pseudorandom number generator generating a second pseudorandom number code string which is different in frequency from and is the same in bit length and code string as the first pseudorandom number code string; a mixer mixing an output signal of the wavelength-time converter with an output signal of the second pseudorandom number generator; and an integrator integrating an output of the mixer.
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Citations
20 Claims
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1. A sensing apparatus comprising:
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a broadband optical source; a first pseudorandom number generator generating a first pseudorandom number code string to modulate the broadband optical source; at least one sensor reflecting an output of the first pseudorandom number generator at a wavelength corresponding to a center wavelength thereof when the output of the first pseudorandom number generator is inputted; a wavelength-time converter converting an output of the sensor by wavelength-time conversion; a second pseudorandom number generator generating a second pseudorandom number code string which is different in frequency from and is the same in bit length and code string as the first pseudorandom number code string; a mixer mixing an output signal of the wavelength-time converter with an output signal of the second pseudorandom number generator; and an integrator integrating an output of the mixer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A sensing apparatus comprising:
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a broadband optical source; a first pseudorandom number generator generating a first pseudorandom number code string to modulate the broadband optical source; a optical amplifier amplifying the modulated broadband optical source; at least one sensor reflecting an output of the first pseudorandom number generator at a wavelength corresponding to a center wavelength thereof when the output of the first pseudorandom number generator is inputted; a wavelength-time converter converting an output of the sensor by wavelength-time conversion; a light detector converting an output of the wavelength-time converter to an electrical signal; an electrical signal amplifier amplifying an output of the light detector; a second pseudorandom number generator generating a second pseudorandom number code string which is different in frequency from and is the same in bit length and code string as the first pseudorandom number code string; a mixer mixing an output signal of the electrical signal amplifier with an output of the second pseudorandom number generator; and an integrator integrating an output of the mixer. - View Dependent Claims (16, 17, 18, 19)
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20. A sensing apparatus comprising:
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a broadband optical source; a first pseudorandom number generator generating a first pseudorandom number code string to modulate the broadband optical source; at least one sensor reflecting an output of the first pseudorandom number generator at a wavelength corresponding to a center wavelength thereof when the output of the first pseudorandom number generator is inputted; a second pseudorandom number generator generating a second pseudorandom number code string which is different in frequency from and is the same in bit length and code string as the first pseudorandom number code string; a mixer mixing an output signal of the sensor with an output signal of the second pseudorandom number generator; and an integrator integrating an output of the mixer.
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Specification