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Er-doped full-solid photon band gap optical fiber power supply with high average wavelength stability

A technology of photonic bandgap and average wavelength, which is applied in the field of Er-doped all-solid photonic bandgap optical fiber light source, can solve the problems of difficult to realize broadband light source, difficult to meet the application, difficult to make engineering of gyro light source, etc., to ensure power stability, Effect of reducing power and average wavelength disturbance and ensuring polarization stability

Active Publication Date: 2012-01-11
武汉长盈通光电技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

One of the main technical bottlenecks of existing high-precision fiber optic gyroscopes is that it is difficult to achieve the broadband light source with high average wavelength stability required by it
Generally speaking, for a high-precision fiber optic gyroscope with a temperature of 1‰, the average wavelength stability of the light source is required to be within 10ppm, and the basic nature of the emission and absorption cross section of Er ions varies with temperature. Temperature (-40 ~ 70°), the average wavelength stability is between 100 ~ 1000ppm, it is difficult to meet the needs of the application
One of the most direct technical improvement solutions adopted by people is to use various types of fiber gratings or photonic crystal fibers to compensate the average wavelength of the final output spectrum. However, problems such as the reliability of the temperature compensation device itself will introduce instability into the entire system. , making it very difficult to manufacture and engineer the gyro light source in practice

Method used

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  • Er-doped full-solid photon band gap optical fiber power supply with high average wavelength stability
  • Er-doped full-solid photon band gap optical fiber power supply with high average wavelength stability
  • Er-doped full-solid photon band gap optical fiber power supply with high average wavelength stability

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Embodiment 1

[0019] Such as Figure 1a As shown, a kind of Er-doped all-solid-state photonic bandgap fiber source with high average wavelength stability of the present invention comprises 980nm pump laser 1, wavelength division multiplexer 3 of 980nm / 1550nm, Er-doped all-solid-state photonic bandgap Optical fiber 4, fiber Faraday rotation mirror 2 and optical isolator 5, 980nm pump laser 1 is connected to the 980nm input end of 980nm / 1550nm wavelength division multiplexer 3, and fiber optic Faraday rotation mirror 2 is connected to the 1550nm end of wavelength division multiplexer 3 The optical fiber end of the wavelength division multiplexer 3 is connected to one end of the Er-doped all-solid photonic bandgap fiber 4 with a length of about 1 m, and the other end of the Er-doped all-solid photonic bandgap fiber 4 is connected to a high-isolation (isolation ≥ 55dB ) of the optical isolator 5.

[0020] Among them, the Er-doped all-solid photonic bandgap fiber 4 can be obtained by an improved...

Embodiment 2

[0023] Other structures of this embodiment are the same as those of Embodiment 1, the only difference being the connection mode of the optical devices and the design parameters of the Er-doped all-solid photonic bandgap fiber 4 . In this embodiment, the 980nm pump laser 1 is connected to the 980nm input terminal of the 980nm / 1550nm wavelength division multiplexer 3, the 1550nm terminal of the 980nm / 1550nm wavelength division multiplexer 3 is connected to the optical isolator 5, and the doped One end of the Er all-solid photonic bandgap fiber 4 is connected to the fiber end of the wavelength division multiplexer 3, and the other end is connected to the fiber Faraday rotation mirror 2. The Ge-doped concentration in the Er-doped all-solid photonic bandgap fiber 4 in this embodiment is 200 ppm.

[0024] The working principle of this embodiment is: 980nm pumping laser 1 sends 980nm pumping light, enters the Er-doped all-solid photonic bandgap fiber 4 after the wavelength division m...

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Abstract

The invention discloses an Er-doped full-solid photon band gap optical fiber power supply with a high average wavelength stability, which comprises a 980nm pumping laser, a wavelength division multiplexer, an Er-doped full-solid photon band gap optical fiber, an optical fiber Faraday rotating mirror and an optical isolator, wherein the Er-doped full-solid photon band gap optical fiber comprises acore and a coating; Ge-doped quartz glass and pure quartz are periodically distributed and are in a regular hexagon latticed shape with Er-doped quartz glass as a symmetrical center on the core crosssection of the Er-doped full-solid photon band gap optical fiber; regular hexagon latticed nodes are Ge-doped quartz glass; beside nodes at the outmost layer, the periphery of each regular hexagon latticed node is encircled by the pure quartz. According to the Er-doped full-solid photon band gap optical fiber power supply disclosed by the invention, the Er-doped full-solid photon band gap opticalfiber is arranged, so that a fiber core of the Er-doped full-solid photon band gap optical fiber can be used for conducting 980nm pumping light and inhibiting a 1530nm emission spectrum, thereby a 1560nm wideband light source which is hardly influenced by temperature is obtained. Proved by tests, the average wavelength stability of an optical fiber light source at full temperature of -40DEG C to 70DEG C is within 20pp and the average wavelength stability of the optical fiber light source at room temperature of 25+ / -0.5DEG C for 11 hours is within 1ppm.

Description

technical field [0001] The invention relates to an optical fiber sensor, in particular to an Er-doped all-solid photonic bandgap optical fiber light source with high average wavelength stability applied to the optical fiber sensor. Background technique [0002] At present, high-precision fiber optic gyroscope (FOG) is a high-tech pursuit of many countries and scientific research institutions in the world. One of the main technical bottlenecks of existing high-precision fiber optic gyroscopes is that it is difficult to realize the broadband light source with high average wavelength stability required by it. Generally speaking, for a high-precision fiber optic gyroscope with a temperature of 1‰, the average wavelength stability of the light source is required to be within 10ppm, and the basic nature of the emission and absorption cross section of Er ions varies with temperature. In the temperature (-40~70°) range, the average wavelength stability is between 100~1000ppm, which...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/16H01S3/00H01S3/101
Inventor 王爱民汪洪海皮亚斌
Owner 武汉长盈通光电技术股份有限公司