Method and device for stabilizing wavelength and power of er-doped fiber light source, and related light source

An erbium-doped fiber and light source technology

Active Publication Date: 2014-06-18
中航捷锐(西安)光电技术有限公司
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Problems solved by technology

[0009] Usually, the method of stabilizing the optical power of the light source is to feedback and adjust the driving current of the pump source by monitoring the change of the output optical power of the light source. Although the stability of the optical power of the light source can be improved in this way, the change of the driving current of the pump source will often lead to the average of the light source. The wavelength stability becomes poor, and it is difficult to balance the two

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  • Method and device for stabilizing wavelength and power of er-doped fiber light source, and related light source
  • Method and device for stabilizing wavelength and power of er-doped fiber light source, and related light source
  • Method and device for stabilizing wavelength and power of er-doped fiber light source, and related light source

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Embodiment Construction

[0028] The above solutions will be described in detail below in conjunction with the drawings and embodiments, but the protection scope of the present invention is not limited to the given embodiments.

[0029] The invention utilizes figure 1 The device in the given embodiment performs compensation calibration, but it is not limited to this device. according to figure 1 As shown, the device includes pump source 01, wavelength division multiplexer 02, erbium-doped fiber 03, filter 04, optical isolator 05, spectroscopic detector 06, electronically controlled variable optical attenuator 07, single-chip microcomputer and ADC and DAC Integrator 08, temperature sensor 09. In the figure, the arrows entering the microcontroller and ADC and DAC integrator 08 indicate information flow, and the arrows exiting the integrator indicate control flow. ADC refers to analog-to-digital converter and DAC exponential-to-analog converter. There are no special requirements for single-chip microcompu...

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Abstract

The invention discloses a method and device for stabilizing the wavelength and the power of an er-doped fiber light source, and the related light source. The mean wavelength change which is caused by the temperature to the er-doped fiber light source is compensated for by controlling the drive current of a pumping source; meanwhile, a light splitting detector and an electronic control variable optical attenuator are connected to the rear portion of a light source isolator, the change of the power of the output light is detected through the light splitting detector, the change quantity is fed back to a single-chip microcomputer, stability of the power of the light is achieved by controlling the variable optical attenuator through the single-chip microcomputer, the method and the device meet the requirement of the wide-spectrum light source for the high mean wavelength, and stability of the output power of the light source is ensured. According to the scheme, the method and the device can be used within a full-temperature range.

Description

Technical field: [0001] The invention belongs to the technical field of optical fiber gyroscope and optical fiber sensing, and particularly relates to a method and device that simultaneously satisfy the average wavelength stability and power stability of an erbium-doped optical fiber light source, and also relates to a broadband erbium-doped optical fiber light source that adopts detection output optical signal and feedback control technology . It is suitable for the light source of interferometric high-precision fiber optic gyroscope and other interferometric sensors. Background technique: [0002] Broad-spectrum light sources have inherent advantages in suppressing errors caused by back reflection and scattering, polarization coupling, Faraday effect, Kerr effect, etc. in interference fiber optic gyroscopes and interference fiber sensors. Common wide-spectrum light sources include LED light sources, SLD light sources and optical fiber light sources doped with rare earth elemen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/13H01S3/131
Inventor 李彬张斌魏飞霍雷王已熏谢良平马海全
Owner 中航捷锐(西安)光电技术有限公司
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