Multi-channel optical channel monitoring system and manufacturing method thereof
A monitoring system and production method technology, applied in the field of optical communication, can solve the problems of being unable to monitor multi-channel transmission, being susceptible to external interference, low integration, etc., to achieve wavelength division multiplexing, high integration, and space The effect of multiplexing
Active Publication Date: 2021-03-23
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] Such as 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 ...
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Abstract
The invention discloses a multi-channel optical channel monitoring system and a manufacturing method thereof, and belongs to the field of optical communication. The inclined grating is etched on the multi-channel waveguide, the area array CCD detector is used for receiving signals, multi-channel optical channel monitoring can be achieved, compared with a traditional channel monitoring method, thedevice based on the integrated waveguide integrates a plurality of optical channels on one optical waveguide, and the plano-convex SiO2 substrate is adopted. An external volume grating diffraction device in a traditional channel monitoring method is replaced with an inclined grating in a waveguide, an area array CCD detector is used for receiving optical signals of different channels and differentwavelength channels, space division multiplexing and wavelength division multiplexing are achieved at the same time, a collimating lens in the specific direction is not needed while multi-channel optical channel monitoring is achieved, the integration degree is high. Structural stabilization is achieved.
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