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US 2007/0166044 A1Published application
Optical quantizing unit and optical A/D converter
AssigneeKabushiki Kaisha Toshiba
InventorsMasatoshi Hirono, Takahiro Suzuki, Hideki Ito, Takeshi Morino
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Abstract
An optical quantizing unit includes an optical divider dividing 1st optical pulses to be quantized and sending the divided 1st optical pulses into a plurality of paths; a plurality of optical filters passing with different transmittances the divided 1st optical pulses; and an optical threshold filter sequentially receiving the 1st optical pulses, and sending 2nd optical pulses when light intensities of the 1st optical pulses are above a preset threshold value.
Claims10
An optical quantizing unit comprising:
- an optical divider dividing 1st optical pulses to be quantized and sending the divided 1st optical pulses to a plurality of paths;
- a plurality of optical filters passing with different transmittances the divided 1st optical pulses;
- and
- an optical threshold filter sequentially receiving the 1st optical pulses, and sending 2nd optical pulses when light intensities of the 1st optical pulses are above a preset threshold value.
1 more element
An optical A/D converter comprising:
- an optical sampling unit which samples optical analog signals;
- an optical quantizing unit which quantizes the sampled optical analog signals and outputs the quantized optical pulses;
- and
- a binary converter which performs binary conversion of the quantized optical pulses,
- wherein the optical quantizing unit includes an optical divider which divides 1st optical pulses to be quantized and transmits the divided 1st optical pulses to a plurality of paths;
- a plurality of optical filters which transmit with different transmittances the divided 1st optical pulses;
- and an optical threshold filter which sequentially receives the 1st optical pulses from the optical filters, and outputs the quantized 2nd optical pulses when light intensities of the 1st optical pulses are above a preset threshold value.
4 more elements
Dependencies are inferred from the claim text.