All-optical switch device and method for operating same

An all-optical switch and optical fiber technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of low efficiency, complicated process, and high cost, and achieve the effect of simple structure, compact device structure, and low cost

Inactive Publication Date: 2017-10-03
SHANGHAI JIAO TONG UNIV
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[0007] In short, the above methods are either costly, or b

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  • All-optical switch device and method for operating same
  • All-optical switch device and method for operating same
  • All-optical switch device and method for operating same

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[0029] The present invention will be further described below with reference to the drawings and embodiments, but the protection scope of the present invention should not be limited by this.

[0030] figure 1 It is a structural diagram of the all-optical switch device of the present invention. It can be seen from the figure that the all-optical switch device of the present invention includes a fiber Mach-Zehnder interferometer, which is characterized by depositing tungsten sulfide on one arm of the fiber-optic Mach-Zehnder interferometer. The tapered fiber 3 of the nanosheet, the specific structure is: 1x2 fiber coupler 1 divides the input light into two output lights: one output light passes through the 980 / 1550 first wavelength division multiplexer 2, the tapered tungsten sulfide deposited Optical fiber 3, 980 / 1550 second wavelength division multiplexer 4 enters one input end of 2x2 fiber coupler 6; the other output light of 1x2 coupler 1 enters said 2x2 fiber coupler 6 through a...

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Abstract

The invention discloses an all-optical switch device and a method for operating the same. The all-optical switch device is characterized in that tungsten sulfide is deposited on a taped optical fiber, and the tapered optical fiber and a Mach-Zehnder interferometer (MZI) are combined with each other to obtain an all-optical switch. The all-optical switch device and the method have the advantages that the all-optical switch device is high in control efficiency and low in signal loss owing to wavelength-dependent absorption of the tungsten sulfide, is compatible to optical fiber systems and is low in cost, simple in structure and high in efficiency.

Description

technical field [0001] The invention relates to an all-optical switch device, in particular to an all-optical switch device and an operation method thereof realized by Mach-Zenger interference combined with wavelength selective absorption of tungsten sulfide. Background technique [0002] Transition metal sulfides are nanomaterials with a two-dimensional layered structure, which have rich optical and electronic properties, and have attracted extensive attention at home and abroad. As a transition metal sulfide, tungsten sulfide was confirmed to have saturable absorption characteristics in 2013, and was found to have optical nonlinearity in 2014. The experimental results of using tungsten sulfide as a saturable absorber for mode-locked lasers and Q-switched lasers have also been reported successively. Therefore, tungsten sulfide has broad application prospects in pulsed lasers, nonlinear optical fibers, optical signal processing and other fields. [0003] On the other hand,...

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Application Information

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IPC IPC(8): G02F1/01G02F1/21
CPCG02F1/0147G02F1/21G02F1/212
Inventor 吴侃郭超世陈建平
Owner SHANGHAI JIAO TONG UNIV
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