Wavelength division multiplexing device for high-capacity optical transmission
A technology of wavelength division multiplexing and optical transmission, applied in the field of optical systems
Active Publication Date: 2021-10-01
NAT KAOHSIUNG UNIV OF SCI & TECH
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[0003] However, as the number of signals to be transmitted increases and the types become more complex, the existing wavelength division multiplexer needs to be improved to integrate multiple channels of light with different wavelengths into multiple channels of light with individual preset wavelengths. To cope with the development of current optical communication technology
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[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0021] refer to figure 1 , 2 , an embodiment of the wavelength division multiplexing device used for large-capacity optical transmission in the present invention includes a chip body 2, an optical input structure 3, a filtering and screening structure 4, and an optical output structure 5 for supplying multiple channels Lights with different wavelengths enter and are combined into multiple channels, each including lights with different wavelengths to transmit signals. For the sake of clarity, the light entering the wavelength division multiplexing device is defined as signal input light with m×n channels and m types of wavelengths, and the wavelengths are represented by λ 11 , lambda 12 ,...,λ m(n-1) , lambda mn Expressed in the form of , where m and n are integers greater than 2.
[0022] The light input structure 3 is arranged on the chip body ...
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A wavelength division multiplexing device for high-capacity light transmission is used for integrating multiple input light with m wavelengths and m * n channels into n channels and then outputting the n channels, and comprises a chip body, a light input structure, a filtering and screening structure and a light output structure, one end parts of the waveguides are regularly arranged at intervals along the side edge of the chip body, the other end parts are gathered into a beam, the filtering and screening structure is connected with the beam-forming end parts of the waveguides so that m * n paths of light transmitted by the waveguides generate preset optical path changes and are gathered into n paths, and the light output structure comprises n waveguides forming a group column, and one end parts of the waveguides are gathered into a beam and are connected with the filtering and screening structure, so that n paths of light enter correspondingly, and the other end parts of the waveguides are orderly arranged at intervals along the side edge of the chip body and are used for outputting the n paths of light.
Description
technical field [0001] The invention relates to an optical system, in particular to a wavelength division multiplexing device for large-capacity optical transmission. Background technique [0002] A wavelength division multiplexer is a widely used optical communication component. Its working principle is that when multiple channels of light of different wavelengths pass through, the light of different wavelengths will cause an optical path difference between each other due to the difference in travel distance. And based on the principle that light interferes with different wavelengths, the light of different wavelengths is coupled into a light with different wavelengths, so that a plurality of signals respectively carried by the lights of different wavelengths are transmitted outward with one light. [0003] However, as the number of signals to be transmitted increases and the types become more complex, the existing wavelength division multiplexer needs to be improved to int...
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IPC IPC(8): G02B6/293
CPCG02B6/2938
Inventor 黄定洧傅柏翰钟国方施天从
Owner NAT KAOHSIUNG UNIV OF SCI & TECH