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A high-stability multiple soliton generation system based on a two-dimensional material saturable absorber

A saturable absorption, two-dimensional material technology, applied in the field of high-stability multiple soliton generation systems, 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, resulting in an unstable central wavelength, the present invention provides a high stability based on two-dimensional material saturable absorber with stable central wavelength A variety of soliton generation systems, when the central wavelength of the optical soliton shifts due to changes in environmental conditions, the present invention uses a compensation circuit to suppress the impact of the external environment, and then keeps 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 multiple soliton generation system based on a two-dimensional material saturable absorber
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  • A high-stability multiple soliton generation system based on a two-dimensional material saturable absorber

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Embodiment 1

[0030] Embodiment 1 Overall structure of the present invention

[0031] A high-stability multiple soliton generation system based on a two-dimensional material saturable absorber. -3U all-fiber optical switch) common input end and first optical coupler 12 (OZ-OPTICS company produces, model is FUSED-12-1064-7 / 125-90 / 10-3U-3mm, splitting ratio is 90 : 90% of the output ends of 10) are connected, and the N output ends of the 1×N optical switch 1 are respectively connected to the 1×N optical coupler 3 (produced by OZ-OPTICS Company) through N different single-mode fibers in the optical fiber group 2 The model is connected to N input ends of the fiber coupler of FUSED-12-1060-7 / 125-50 / 50-3U-3mm), and the described optical fiber group 3 is made of N single-mode optical fibers with different lengths (FIBERCORE company SM1500 type ordinary single-mode optical fiber), N is an integer of 2 to 8, the common output port of 1×N optical coupler 3 and saturable absorber 4 (made of two-dimen...

Embodiment 2

[0032] Embodiment 2 Center wavelength tuning device

[0033] 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; Output end is connected; One end of Bragg grating 62 is connected with the second port of optical circulator 66, and the first port of optical circulator 66 (the product CIR1064 of THORLABS company) 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 is connected to the input end of the optical isolator 7 as the output end of the central wavelength tuning devi...

Embodiment 3

[0034] Embodiment 3 function conversion circuit

[0035] 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 , connected to the output end of the photoelectric conversion 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 to ...

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Abstract

The invention relates to a high-stability multi-soliton generation system based on a two-dimensional material saturable absorber, belonging to the technical field of optoelectronic equipment. Its mainstructure includes a 1*N optical switch (1), an optical fiber group (2), a 1*N optical coupler (3), a saturable absorber (4), a dispersion compensation optical fiber (5), and a 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 optical fiber sensors, in particular to a high-stability multiple soliton generation system based on a two-dimensional material saturable absorber. 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 optic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/067H01S3/106H01S3/13G01D5/26
CPCG01D5/268H01S3/067H01S3/106H01S3/1307
Inventor 高博霍佳雨吴戈汝玉星
Owner JILIN UNIV