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1997
Journal Article
Titel
Quasicontinuous tunable fiber-ring laser applied as local oscillator in an absolute calibrated spectrometer for WDM systems
Abstract
A special tunable fiber-ring laser is introduced. With this laser as local oscillator, a calibrated optical spectrometer was realized, which allows the determination of the wavelength of all transmitters of a wavelet division multiplexing (WDM) system in one sweep. The system is based on a fiber ring laser including a high finesse Fabry-Perot resonator with a high free spectral range and a 1-km-long dispersion shifted fiber. To achieve a high wavelength determination accuracy two auxiliary signals are generated: one with a Krypton filled absorption tube and another with a simple, silica based, periodical filter. With that, the wavelength of every transmitter of a WDM signal can be determined with an absolute frequency accuracy of better than +or-0.8 GHz in a range of 1527-1562 nm in one sweep. The relative frequency accuracy is better than +or-0.3 GHz.
Tags
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calibration
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fabry-perot resonators
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fibre lasers
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laser frequency stability
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laser tuning
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measurement errors
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optical communication equipment
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optical transmitters
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ring lasers
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spectrometer accessories
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spectrometers
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wavelength division multiplexing
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quasicontinuous tunable fiber-ring laser
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local oscillator
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absolute calibrated spectrometer
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wdm systems
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tunable fiber-ring laser
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calibrated optical spectrometer
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transmitters
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wavelet division multiplexing
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wdm
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fiber ring laser
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high finesse fabry-perot resonator
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high free spectral range
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dispersion shifted fiber
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high wavelength determination accuracy
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auxiliary signals
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krypton filled absorption tube
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periodical filter
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absolute frequency accuracy
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relative frequency accuracy
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1 km
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1527 to 1562 nm