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A High Stability Optical Soliton Generator Based on Erbium-doped Fiber Laser

A high-stability, erbium-doped optical fiber technology, applied in electrical components, electromagnetic wave transmission systems, transmission systems, etc., can solve problems such as central wavelength instability, and achieve the effect of improving central wavelength stability and accuracy

Inactive Publication Date: 2020-12-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A High Stability Optical Soliton Generator Based on Erbium-doped Fiber Laser
  • A High Stability Optical Soliton Generator Based on Erbium-doped Fiber Laser
  • A High Stability Optical Soliton Generator Based on Erbium-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 input end of polarization controller 1 (HFPC-11-1064-S-9 / 125-3U all-fiber polarization controller produced by OZ-OPTICS Company) and the first optical coupler 11 (produced by OZ-OPTICS company, the model is FUSED-12-1064-7 / 125-90 / 10-3U-3mm, the splitting ratio is 90:10) is connected to the 90% output end, and the output end of polarization controller 1 is connected to 1 The common input terminals of ×N optical switch 2 (the model of MFOS-12-9 / 125-S-1060-3U produced by OZ-OPTICS Company) are connected to the common input terminals, and the N output terminals of 1×N optical switch 2 Respectively through N different single-mode optical fibers in the optical fiber group 3 and 1×N optical coupler 4 (the optical fiber produced by OZ-OPTICS company is FUSED-12-1060-7 / 125-50 / 50-3U-3mm Coupler) connected to the N input ends, the op...

Embodiment 2

[0030] Embodiment 2 Structural block diagram of 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 23; The output end is connected; one end of the Bragg grating 62 is connected with the second port of the optical circulator 66 (PIOC3-15 type optical circulator of Shanghai Hanyu Company), and the first port of the optical circulator 66 is used as the input end of the central wavelength tuning device 6 , connected to the saturable absorber 5 , the third port of the optical circulator 66 is connected to the input end of the optical isolator 7 as the out...

Embodiment 3

[0032] Embodiment 3 function conversion circuit

[0033] The structure of the function conversion circuit 19 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 end of the function conversion circuit 19, which is denoted as the port ACOS_in , is connected with the output end of the differential amplifier circuit 18; the other end of the resistor R2 is grounded; the pins 2, 3, 4, 5, 8, 11, and 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 ...

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Abstract

The invention relates to a high-stability optical soliton generator based on an erbium-doped fiber laser, belonging to the technical field of optoelectronic equipment. Its main structure includes a polarization controller (1), 1 * N optical switch (2), optical fiber group (3), 1 * N optical coupler (4), saturable absorber (5), central wavelength tuning device (6). The invention can generate a plurality of different types of optical solitons, is convenient to use, and the center wavelength of the output optical soliton is stable when the environmental parameters are changed.

Description

technical field [0001] The invention belongs to the technical field of optoelectronic equipment, in particular to a high-stability optical soliton generator based on an erbium-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 w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/508
CPCH04B10/508
Inventor 汝玉星毕琳旭杨忠岗孙茂强于广安高博吴戈
Owner JILIN UNIV