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A device for multiple soliton generation based on graphene saturable absorber

A technology of saturable absorption and generation devices, which is applied in the direction of phonon exciters, the structure/shape of active media, laser components, etc., and can solve problems such as central wavelength instability

Inactive Publication Date: 2020-05-22
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 device for multiple soliton generation based on graphene saturable absorber
  • A device for multiple soliton generation based on graphene saturable absorber
  • A device for multiple soliton generation based on graphene saturable absorber

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Embodiment 1

[0030] Embodiment 1 Overall structure of the present invention

[0031] Such as figure 1As 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 N optical coupler 3 is connected with one end of graphene sa...

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 (10K25°) and the Bragg The grating 62 (JH-FGA-A101) is pasted on the upper surface of the aluminum block 61; the thermistor 63 is connected to the thermistor input end of the temperature control circuit 24; the semiconductor thermoelectric cooler 64 is connected to the current output end of the temperature control circuit 24 Link to each other; one end of Bragg grating 62 links to each other with the second port of optical circulator 66, and the first port of optical circulator 66 (the product CIR1064 of THORLABS company) links to each other with described dispersion compensating optical fiber 5, and the 3rd port links to each other with described The input terminals of the optica...

Embodiment 3

[0034] Embodiment 3 function conversion circuit

[0035] The structure of the function conversion circuit 20 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 20, which is denoted as the port ACOS_in , is connected with the output end of the differential amplifier circuit 19; 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 graphene saturable absorber-based multi-soliton generation device and belongs to the technical field of photoelectric equipment. The main structure of the graphene saturableabsorber-based multi-soliton generation device comprises a 1*N optical switch (1), a fiber group (2), a 1*N optical coupler (3), a saturable absorber (4), a dispersion compensation fiber (5) and a central wavelength tuning device (6). By the graphene saturable absorber-based multi-soliton generation device, various different types of optical solitons can be generated, the graphene saturable absorber-based multi-soliton generation device is convenient to use, and the output optical solitons are stable in central wavelengths when an ambient parameter is changed.

Description

technical field [0001] The invention belongs to the technical field of optoelectronic equipment, in particular to a variety of soliton generating devices based on graphene saturable absorbers. 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 wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/106H01S3/067H01S3/13
CPCH01S3/067H01S3/06716H01S3/1061H01S3/13
Inventor 吴戈胡佳琪高博汝玉星
Owner JILIN UNIV