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Optical soliton pulse generator formed by erbium-doped-fiber laser

A technology of pulse generator and erbium-doped fiber, which is applied in the field of optical soliton communication, can solve the problems of poor repeatability of experimental results

Inactive Publication Date: 2014-09-10
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved in the present invention is to overcome the shortcomings of the existing optical soliton generation system that can only generate a single type of optical soliton and poor repeatability of experimental results, and provide a stable optical soliton generation device that can generate multiple types of optical solitons, This device has the advantage of realizing convenient switching among various types of optical solitons without changing the structure of the optical path

Method used

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  • Optical soliton pulse generator formed by erbium-doped-fiber laser
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  • Optical soliton pulse generator formed by erbium-doped-fiber laser

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Embodiment 1

[0022] Embodiment 1: overall structure of the present invention

[0023] The common input end of 1×N optical switch 2 (the model of MFOS-1N-9 / 125-S-1310-3U series all-fiber optical switch produced by OZ-OPTICS Company) is connected with 1×2 optical coupler 1 ( The 1×2 standard single-mode fiber coupler produced by Shanghai Hanyu Optical Fiber Communication Technology Co., Ltd., with a splitting ratio of 3:7) is connected to 70% of the output terminals, and the N output terminals of the 1×N optical switch 2 are respectively passed through the optical fiber group 3 N different optical fibers are connected to N input ends of 1×N optical coupler 4 (standard single-mode optical fiber coupler produced by Shanghai Hanyu Optical Fiber Communication Technology Co., Ltd.), and the optical fiber group 3 is composed of N Optical fibers of different lengths (SM1500 ordinary single-mode optical fiber from FIBERCORE Company), the common output end of 1×N optical coupler 4 and saturable absor...

Embodiment 2

[0024] Embodiment 2 realizes the working process of producing double solitons (ordinary solitons and dissipative solitons)

[0025] In this embodiment, N is 2. Such as figure 1 As shown, the first light provides the energy for the energy level transition to the erbium-doped fiber, and the propagation direction of this light is in figure 1The center is counterclockwise, and it is emitted by the pump light source 9 (VENUS series 980nm high-power single-mode pump light source of Shanghai Kenet Laser Technology Co., Ltd., the model is VLSS-980-B, and the maximum single-mode output optical power is 1200mW). . The pumping light source 9 is connected to the 980nm end of the optical wavelength division multiplexer 8 (the fusion tapered 980 / 1550nm pumping optical wavelength division multiplexing coupler produced by Shanghai Hanyu Optical Fiber Communication Technology Co., Ltd.), and the pumping light source 9 sends Laser light is introduced into the fiber resonator. The common end...

Embodiment 3

[0030] Embodiment 3 The present invention realizes the working process of producing 8 kinds of ground state optical solitons

[0031] refer to figure 1 And embodiment 2, N is taken as 8 in the present embodiment. The 1 × N optical switch 2 in embodiment 2 is changed from 1 × 2 optical switch to 1 × 8 optical switch (the model that OZ-OPTICS company produces is the 1 × of MFOS-18-9 / 125-S-1060-3U 8 all-fiber optical switch); 1×N optical coupler 4 is changed from 1×2 optical coupler to 1×8 optical coupler (the model produced by BC-OPTICS company is SP-1060nm-AV-1×8-S302 1×8 optical coupler); fiber group 3 is composed of 2 single-mode fibers instead of 8 single-mode fibers. ;Other devices and connection methods remain unchanged, and an 8 kinds of common soliton generating devices can be formed.

[0032] When the 1×8 optical switch 2 is used to select single-mode fibers of different lengths in the fiber group 3 to change the second-order dispersion coefficient in the laser fiber...

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Abstract

The invention belongs to the optical soliton technology field and particularly relates to an optical soliton pulse generator formed by an erbium-doped-fiber laser. The optical soliton pulse generator formed by erbium-doped-fiber laser comprises a 1*2 optical coupler (1), a 1*N optical switch (2), an optical fiber group (3), a 1*N optical coupler (4), a saturable absorber (5), an optical isolator (6), an erbium-doped fiber (7), an optical wavelength division multiplexer (8), a pump light source (9) and a polarization controller (10). According to the optical soliton pulse generator formed by the erbium-doped-fiber laser, soliton in multiple types such as a ground state optical soliton pulse and a dissipation soliton pulse and bound state multi-soliton of the ground state optical soliton pulse and the dissipation soliton pulse can be obtained in the same passive mode-locking erbium-doped fiber laser system, the performance is stable, and the repeatability is good.

Description

technical field [0001] The invention belongs to the technical field of optical soliton communication, in particular to an optical soliton generator composed of an erbium-doped fiber laser. Background technique [0002] With the rapid development of optical communication technology in recent years, researchers from all over the world have been working hard to find suitable optical fiber communication information carriers. Optical soliton pulses can be transmitted in optical fiber conformally, which determines that it has a wide range of application prospects in the field of communication. Therefore, passively mode-locked Erbium-doped fiber laser systems that can generate optical soliton pulses have also attracted the attention of researchers. The soliton pulse generated by the passive mode-locked erbium-doped fiber laser system is the result of the combined effects of gain, loss, nonlinearity and dispersion in the resonator. [0003] If the total group velocity dispersion in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/508
Inventor 高博吴戈田小建于思瑶
Owner JILIN UNIV
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