Mean wavelength stable SFS with variable parameter control technology

Guo, Jinjin; Tong, Sarah Y.; Zhao, Guancheng; Yang, Yuanhong

doi:10.1117/12.757648

Cited by 3 publications

(3 citation statements)

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“…In a relation to FOGs, typical studied issues of the SFS include maximizing a spectrum width [7]- [9] and flatness [6], [7], [10], [11], minimizing a radiation sensitivity [12], [13], but majority of the studies are dedicated to minimizing a temperature sensitivity [3], [14]- [24]. As the measured angular velocity by the FOG is proportional to the Sagnac phase shift with a scale factor depending on the used wavelength, the SFS mean wavelength stability is the most critical parameter.…”

Section: Introductionmentioning

confidence: 99%

“…So far, many approaches have been proposed to enhance the SFS mean wavelength temperature stability, such as long period grating [15], fiber Bragg grating [16], [28], photonic bandgap filter [17], thin film filter [11], [29], Er-doped fiber filter [8], [14], [22], [23], also photonic crystal Er-doped fiber [18], Faraday rotator mirror [19], [20], [30], or variable parameters control [24].…”

Section: Introductionmentioning

confidence: 99%

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Improvement of the Temperature Stability of the Erbium-Doped Superfluorescent Fiber Source by Tuning the Reflectivity of the Fiber End

Skalský

Hnidka

Havránek

2023

J. Lightwave Technol.

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A novel and simple way of improving the mean wavelength temperature stability of the erbium-doped superfluorescent source is described and demonstrated. We show that by introducing small reflectivity feedback at the unpumped fiber end in the backward-pump superfluorescent source configuration, we can affect an overall temperature dependency of the mean wavelength of the output spectrum. The reflectivity adjustment can be made by an angled fiber cleave, varying the reflectivity between 0 to 4 %, or by a fusion arc, allowing its finer adjustment. With this approach, we were able to arbitrarily adjust the mean wavelength temperature trend from -4.38 to 5.23 ppm/ • C. Furthermore, an optimal reflectivity was attained, providing almost zero trend and reducing the total mean wavelength variation to 130 ppm over the temperature range of -40 to +100 • C, which is a 5.7-fold and 4.4-fold improvement compared to 0 • and a standard 8 • fiber cleave angle, respectively. By avoiding any filtering components, a wide bandwidth of 37.8 nm and a power efficiency of 22% was reached. Since the proposed configuration does not include any extra components compared to the basic backward-pump configuration, it can be a viable solution for cost-efficient applications, such as, e.g., mediumgrade fiber-optic gyroscopes. A benefit for these gyroscopes is the tunability of the source wavelength temperature dependency which can conveniently compensate the gyro coil temperature sensitivity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improvement of the Temperature Stability of the Erbium-Doped Superfluorescent Fiber Source by Tuning the Reflectivity of the Fiber End

Skalský

Hnidka

Havránek

2023

J. Lightwave Technol.

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“…It can modify the emission and absorption cross-sections of erbium ions, inducing a drift in the mean wavelength. Many techniques have been adopted to decrease the thermal coefficient of SFS, such as using a Bragg fiber grating [6], long-period fiber grating filter [7], Er-doped fiber filter [8], variable parameter control technology [9], chirped fiber grating [10], photonic bandgap fiber [11] or bandpass filter [12] to compensate for the mean wavelength drift. However, to my knowledge, matched fiber filters are quite hard to be accurately fabricated to compensate a specific fiber source, limiting their practical applications.…”

Section: Introductionmentioning

confidence: 99%

High stability double-pass backward Er-doped superfluorescent fiber source incorporating an Er-doped fiber filter

Wang

Zhang

et al. 2014

2014 International Conference on Multisensor Fusion and Information Integration for Intelligent Systems (MFI)

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An Er-doped fiber (EDF) filter was used in a double-pass backward Er-doped superfluorescent fiber source (SFS) to improve its mean wavelength thermal stability. The thermal stabilities of mean wavelength for four configurations of SFS with or without the Er-doped fiber filter and Faraday rotator mirror were explored experimentally. The result shows that with an EDF filter and a FRM incorporated in a double-pass backward Er-doped SFS, the mean wavelength variation can reach 32.02 ppm over the temperature range of -40 °C to 60 °C. The mean wavelength was around 1561 nm and its bandwidth reached 15.8 nm. The pump power was 55 mW at 974.2 nm and the output power reached 7.8 mW with 5-m Er-doped fiber.

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