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Method and device for stabilizing wavelength and power of erbium-doped fiber optic light source and corresponding light source

An erbium-doped fiber, optical power technology, applied in lasers, laser parts, electrical components, etc., can solve the problem of the deterioration of the average wavelength stability of the light source, and meet the requirements of high average wavelength stability and high light source output. Requirements for power stability, the effect of high power stability

Active Publication Date: 2017-01-04
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 erbium-doped fiber optic light source and corresponding light source
  • Method and device for stabilizing wavelength and power of erbium-doped fiber optic light source and corresponding light source
  • Method and device for stabilizing wavelength and power of erbium-doped fiber optic light source and corresponding light source

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

[0029] The present invention utilizes figure 1 The example device is given for compensation calibration, but is not limited to such a device. according to figure 1 As shown, the device includes a pumping source 01, a wavelength division multiplexer 02, an erbium-doped fiber 03, a filter 04, an optical isolator 05, a spectroscopic detector 06, an electronically controlled variable optical attenuator 07, a single-chip microcomputer, ADC and DAC Integrator 08, temperature sensor 09. In the figure, the arrow pointing into the MCU and the ADC and DAC integrator 08 indicates the information flow, and the arrow pointing out of the integrator indicates the control flow. ADC refers to analog-to-digital converter and DAC exponential-to-analog converter. There is no spec...

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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 in particular relates to a method and device capable of satisfying the stability of the average wavelength and power of an erbium-doped optical fiber light source at the same time, 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 interferometric high-precision fiber optic gyroscopes and light sources for 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 interferometric fiber optic gyroscopes and interferometric fiber optic sensors. Common broadband light sources include LED light source, SLD light source and fiber light source doped with rare ea...

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Application Information

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Patent Type & Authority Patents(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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