A multi-channel optical channel monitoring system and manufacturing method thereof
A monitoring system and manufacturing method technology, applied in the field of optical communication, can solve the problems of low integration, complex system, easy to be subject to external interference, etc., achieve space division multiplexing and wavelength division multiplexing, stable structure and high integration Effect
Active Publication Date: 2022-03-18
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a multi-channel optical channel monitoring system and its manufacturing method, the purpose of which is to solve the problem that the current optical channel monitoring system cannot be used to monitor multi-channel transmission, or the system is too complicated , low integration, vulnerable to external interference technical problems
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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0041] like figure 1 As shown, the existing optical channel monitoring system includes: transmission fiber 18 , fiber coupler 19 , fiber collimator 20 , volume diffraction grating 21 , focusing lens 22 , and line array detector 23 . The signal light in the transmission fiber 18 is divided into two paths after passing through the fiber coupler 19, one path is used for channel monitoring, and the...
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Abstract
The invention discloses a multi-channel optical channel monitoring system and a manufacturing method thereof, belonging to the field of optical communication. The present invention writes inclined gratings on the multi-channel waveguide and uses an area array CCD detector to receive signals, and can realize multi-channel optical channel monitoring. Compared with the traditional channel monitoring method, the present invention is a device based on an integrated waveguide. The channel is integrated on an optical waveguide, using a plano-convex SiO2 substrate, replacing the external volume grating diffraction device in the traditional channel monitoring method with an inclined grating inside the waveguide, and using an area array CCD detector to receive light from different channels and different wavelength channels Signal, realize space division multiplexing and wavelength division multiplexing at the same time, while realizing multi-channel optical channel monitoring, no collimating lens in a specific direction is required, with high integration and stable structure.
Description
technical field [0001] The invention belongs to the field of optical communication, and more specifically relates to a multi-channel optical channel monitoring system and a manufacturing method thereof. Background technique [0002] With the rapid development of 5G communication, the construction of optical networks with high channel density and high channel transmission rate has become an inevitable trend in the development of the communication field. Dense Wavelength Division Multiplexing (DWDM) and Space Division Multiplexing (SDM) are common means to increase the number of channels, and are also the first choice for optical communication and optical network system expansion. Usually, the two technologies are used at the same time to achieve the best Expansion effect. For DWDM systems, in addition to monitoring the power of each channel, it is also necessary to monitor the wavelength and optical signal-to-noise ratio of each channel. [0003] Currently, the commonly use...
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IPC IPC(8): H04B10/079H04J14/02
CPCH04B10/0795H04B10/07955H04B10/07953H04B10/07957H04J14/0202
Inventor 闫志君宋青果孙琪真
Owner HUAZHONG UNIV OF SCI & TECH