研究目的
To demonstrate a linear-cavity fiber laser using a fiber Bragg grating (FBG) fabricated by femtosecond laser and a Sagnac loop as cavity mirrors, and to characterize its temperature sensing response in a high-temperature environment.
研究成果
The fiber laser achieved stable output at high temperatures up to 1000 ℃ after annealing the FBG at 1100 ℃. The temperature–wavelength relationship was quadratic from room temperature to 1000 ℃ and linear from 300 ℃ to 1000 ℃, with a sensitivity of 15.9 pm/℃.
研究不足
The fiber laser wavelength was red-shifted at 900 ℃ and 1000 ℃ before annealing, indicating instability at these temperatures without prior annealing.
1：Experimental Design and Method Selection:
A linear-cavity fiber laser was designed using an FBG fabricated by femtosecond laser and a Sagnac loop as cavity mirrors. The temperature sensing response was characterized by placing the FBG in a high-temperature environment.
2：Sample Selection and Data Sources:
The FBG was fabricated in standard telecom fiber core using femtosecond laser pulses. The fiber laser output was measured using an optical spectrum analyzer and a power meter.
3：List of Experimental Equipment and Materials:
980-nm pump laser diode, wavelength division multiplexer (WDM), Er-doped fiber, polarization controller (PC), single-mode fiber, unpumped Er-doped fiber, optical coupler, optical spectrum analyzer (OSA), power meter, tube furnace.
4：Experimental Procedures and Operational Workflow:
The FBG was annealed at 1100 ℃ to improve stability. The temperature was increased in intervals of 100 ℃ up to 1000 ℃, maintaining each temperature for 60 min to observe stability.
5：Data Analysis Methods:
The output spectra and power were measured. The center wavelength of the fiber laser was analyzed as a function of temperature.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容-
optical spectrum analyzer
AQ6370D
Yokogawa
To measure the output spectra of the fiber laser.
立即获取同款设备 -
Ti: sapphire laser
Libra-USP-HE
Coherent
To generate femtosecond laser pulses for FBG fabrication.
暂无现货
预约到货通知
-
single-mode fiber
SMF-28
Corning
To form part of the Sagnac loop.
暂无现货
预约到货通知
-
pump laser diode
980-nm
To pump the Er-doped fiber for laser gain.
暂无现货
预约到货通知
-
wavelength division multiplexer
WDM
To multiplex the pump laser and the signal laser.
暂无现货
预约到货通知
-
Er-doped fiber
ESF-7/125
Nufern
To provide gain for the fiber laser.
暂无现货
预约到货通知
-
polarization controller
PC
To control the polarization state of the light in the Sagnac loop.
暂无现货
预约到货通知
-
unpumped Er-doped fiber
EDFC-980-HP
Nufern
To act as a saturable absorber to improve the stability of the fiber laser.
暂无现货
预约到货通知
-
optical coupler
50/50
To split the light in the Sagnac loop.
暂无现货
预约到货通知
-
power meter
To measure the output power of the fiber laser.
暂无现货
预约到货通知
-
tube furnace
To provide a high-temperature environment for testing the FBG.
暂无现货
预约到货通知
-
cylindrical lens
To focus the femtosecond laser beam.
暂无现货
预约到货通知
-
phase mask
zero-order nulled
To create an interference pattern for FBG fabrication.
暂无现货
预约到货通知
-
登录查看剩余11件设备及参数对照表
查看全部
