Stabilization of the mean wavelength of an erbium-doped fiber source as part of high-accuracy FOG with increased spectrum width

Nikita Kikilich; Artem Aleinik; Grigorii Pogudin; Evgenii Vostrikov; Evgenii Vostrikov; Mikhail Smolovik; Andrei Vinogradov; Iuliia Zalesskaia; Evgenii Motorin

doi:10.1364/AO.460504

Applied Optics
Vol. 61,
Issue 23,
pp. 6827-6833
(2022)
•https://doi.org/10.1364/AO.460504

Stabilization of the mean wavelength of an erbium-doped fiber source as part of high-accuracy FOG with increased spectrum width

Nikita Kikilich, Artem Aleinik, Grigorii Pogudin, Evgenii Vostrikov, Mikhail Smolovik, Andrei Vinogradov, Iuliia Zalesskaia, and Evgenii Motorin

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Nikita Kikilich, Artem Aleinik, Grigorii Pogudin, Evgenii Vostrikov, Mikhail Smolovik, Andrei Vinogradov, Iuliia Zalesskaia, and Evgenii Motorin, "Stabilization of the mean wavelength of an erbium-doped fiber source as part of high-accuracy FOG with increased spectrum width," Appl. Opt. 61, 6827-6833 (2022)

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Table of Contents Category
- Fiber Optics, Fiber Sensors, and Optical Communications
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About this Article
History
- Original Manuscript: April 7, 2022
- Revised Manuscript: July 19, 2022
- Manuscript Accepted: July 21, 2022
- Published: August 2, 2022

Abstract

The mean wavelength, spectrum width, and optical power of the output light of an erbium-doped fiber source (EDFS) are key parameters for navigation systems based on navigation-grade and strategic-grade fiber optic gyroscopes (FOGs). We propose a method of simultaneous stabilization for EDFS parameters. The essence of this method is to stabilize the constant values of the mean wavelength and optical power by real-time adjustment of the two laser diodes’ pump ratios during temperature changes using an EDFS double-pass bidirectional optical scheme with the unpumped erbium-doped fiber. The achieved temperature stability of the EDFS mean wavelength as a component of the FOG was 0.32 ppm/°C, and the spectrum width at half-maximum was more than 16.5 nm.

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	$λ_{c}$ Stability, ppm/°C	Spectrum Width	Temperature Range	Main Features
Proposed method	0.32	16.5 nm	0° to $+ 40^{\circ} C$	Achievement of the broadest spectrum alongside high stability of the central wavelength was demonstrated
Our previously proposed method [6]	0.7	12 nm	$- 40^{\circ}$ to $+ 60^{\circ} C$	Superior stability of the central wavelength of the EDFS as a component of various devices with spectral selectivity; setting a constant value of the optic power of the OL without modifying the optic scheme
Method no. 1 [17]	1.3	10 nm	$- 40^{\circ}$ to $+ 60^{\circ} C$	Optimum types and lengths of EDFs found
Method no. 2 [16]	0.129	Two peaks: 6 nm ( $λ_{c} = 1530 n m$ ) 5 nm ( $λ_{c} = 1560 n m$ )	$- 40^{\circ}$ to $+ 60^{\circ} C$	Superfluorescent fiber source based on an erbium-doped photonic crystal fiber with high mean wavelength stability. Optimum lengths of EDFs and optimum pump powers with a high degree of accuracy found
Method no. 3 [15]	0.077	6 nm	$- 40^{\circ}$ to $+ 70^{\circ} C$
Method no. 4 [20]	0.67	15.5 nm	$- 26^{\circ}$ to $+ 65^{\circ} C$	Broadband FBG with carbon fiber composite materials used for temperature-stable passive control
Method no. 5 [21]	1.5	37.68 nm	$- 40^{\circ}$ to $+ 60^{\circ} C$	One-stage backward erbium-doped fiber super fluorescent source configuration proposed by incorporating a vertical cleaved fiber tail that acts like a Fresnel reflector
Method no. 6 [22]	0.009	2 nm	$- 45^{\circ}$ to $+ 70^{\circ}$	Narrow optical filter used to improve performance of the single-pass backward erbium-doped fiber super fluorescent source configuration

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