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An Optical Soliton Generation System Based on Ytterbium-Doped Fiber Laser

A ytterbium-doped fiber and laser technology, used in lasers, laser parts, phonon exciters, etc., can solve problems such as center wavelength instability, and achieve the effect of improving center wavelength stability and accuracy

Inactive Publication Date: 2020-05-22
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the defect that the central wavelength of the optical soliton generated by the existing optical soliton generation system is easily affected by environmental parameters and cause the central wavelength to be unstable, the present invention provides an optical soliton generation system with a stable central wavelength. When the central wavelength of the soliton shifts, the present invention uses a compensation circuit to suppress the influence of the external environment, thereby keeping the central wavelength of the optical soliton generated by the system unchanged, thereby improving the stability of the central wavelength of the optical soliton

Method used

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  • An Optical Soliton Generation System Based on Ytterbium-Doped Fiber Laser
  • An Optical Soliton Generation System Based on Ytterbium-Doped Fiber Laser
  • An Optical Soliton Generation System Based on Ytterbium-Doped Fiber Laser

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Embodiment 1

[0028] Embodiment 1 Overall structure of the present invention

[0029] Such as figure 1 As shown, the overall structure of the present invention has, the common input end of 1*N optical switch 1 (the model that OZ-OPTICS company produces is the all-fiber optical switch of MFOS-12-9 / 125-S-1060-3U) and 1 ×2 Optical coupler 12 (manufactured by OZ-OPTICS company, model is FUSED-12-1064-7 / 125-90 / 10-3U-3mm, splitting ratio is 90:10) connected to 90% output end, 1×N The N output ends of the optical switch 1 respectively pass through N different single-mode optical fibers in the optical fiber group 2 and 1×N optical coupler 3 (the model produced by OZ-OPTICS is FUSED-12-1060-7 / 125-50 / 50-3U-3mm fiber coupler) connected to the N input ends, the optical fiber group 2 is composed of N single-mode optical fibers (SM1500 ordinary single-mode optical fiber of FIBERCORE Company) with different lengths, 1× The common output end of the N optical coupler 3 is connected to one end of the satu...

Embodiment 2

[0030] Embodiment 2 Center wavelength tuning device

[0031] The structure of the center wavelength tuning device 6 is that a semiconductor thermoelectric cooler 64 (TEC12705) is sandwiched between the lower surface of the aluminum block 61 and the upper surface of the heat sink 65; the thermistor 63 (10kΩ@25°) and the Bragg grating 62 (JH-FGA-A101) are pasted on the upper surface of the aluminum block 61; the thermistor 63 is connected with the thermistor input end of the temperature control circuit 22; Output end is connected; One end of Bragg grating 62 is connected with the second port of optical circulator 66 (the product CIR1064 of THORLABS company), and the first port of optical circulator 66 is as the input end of central wavelength tuning device 6, and described dispersion The compensation fiber 5 is connected, and the third port of the optical circulator 66 serves as the output end of the central wavelength tuning device 6 and is connected to the input end of the opt...

Embodiment 3

[0032] Embodiment 3 function conversion circuit

[0033] The structure of the function conversion circuit 18 is that one end of the capacitor C3 is connected to the pin 12 of the trigonometric function converter U1 and one end of the resistor R2, and the other end of the capacitor C3 is used as the input terminal of the function conversion circuit 18, which is denoted as the port ACOS_in , connected to the output end of the photoelectric conversion circuit 17; the other end of the resistor R2 is grounded; the pins 2, 3, 4, 5, 8, 11, 13 of the trigonometric function converter U1 are grounded, and the pins 9, 10 are connected to the capacitor C2 One end is connected to -12V power supply, the other end of capacitor C2 is grounded; pin 6 of trigonometric function converter U1 is connected to pin 7, pin 16 is connected to +12V power supply and one end of capacitor C1, and the other end of capacitor C1 is grounded; The pin 1 of the trigonometric function converter U1 is connected to...

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Abstract

The invention discloses an optical soliton generation system based on an ytterbium-doped fiber laser, and belongs to the technical field of photoelectric equipment. The system mainly comprises a 1 x Noptical switch (1), an optical fiber set (2), a 1 x N optical coupler (3), a saturable absorber (4), a dispersion compensating fiber (5), a central wavelength tuning device (6), etc. According to theoptical soliton generation system based on the ytterbium-doped fiber laser, various different types of optical solitons can be generated, the system is convenient in use, and the outputted center wavelength of the optical soliton is stable when the environmental parameter is changed.

Description

technical field [0001] The invention belongs to the technical field of optoelectronic equipment, in particular to an optical soliton generation system based on an ytterbium-doped fiber laser. Background technique [0002] Optical solitons are a special form of ultrashort light pulses that maintain their shape, amplitude and speed during propagation. The characteristics of optical solitons determine that it has a wide range of application prospects in the field of communication. First, its communication capacity is large: the transmission code rate can generally reach 20Gb / s, and the highest can reach more than 100Gb / s. Secondly, it has low bit error rate and anti-interference ability. Strong: Optical solitons remain unchanged during transmission and the adiabatic characteristics of optical solitons determine that the bit error rate of optical soliton transmission is much lower than conventional optical fiber communication, and even error-free optical fiber communication with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/067
CPCH01S3/06716H01S3/06725H01S3/06783
Inventor 汝玉星于广安毕琳旭杨忠岗孙茂强吴戈高博
Owner JILIN UNIV