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Hydrogen sulfide gas sensing equipment
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Carbon monoxide gas sensing equipment
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Polarization-irrelevant tunable Fabry-Perot filter
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Spectrum analytical equipment
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Tunable laser for outputting non-polarized light
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Tunable optical filter irrelevant to polarization state of incident light
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Tunable optical filter with fixed frequency space and single-mode output
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Single-mode continuous tunable optical filter
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Tunable Fabry-Perot filter
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Laser device with continuously tunable broadband
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Fiber Bragg grating-based extensible distributed sensing system
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Fiber electro-optic sensing system
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