Optoelectronic devices based on wavelength division multiplexing

Abstract

The invention discloses a wavelength division multiplexing-based photoelectric device, which comprises a detector, a reflection device, a WDM (wavelength division multiplexing) optical filter, a collimator, a double fiber-tip device and a WDM optical filter pipe body, wherein the WDM optical filter is internally installed on a support in the WDM optical filter pipe body; above the internally installed WDM optical filter, the reflection device is fixedly arranged at the upper part of the WDM optical filter pipe body through an insulating material; along the direction of the optical axis of the detector, the detector is fixedly arranged at one side of the WDM optical filter pipe body through the insulating material; the other side of the WDM optical filter pipe body is fixedly provided with the collimator; and the other side of the collimator fixed to the WDM optical filter pipe body is fixedly provided with the double fiber-tip device. By applying the WDM-based photoelectric device disclosed by the invention, the time required by regulation can be shortened, and the regulation efficiency can be improved.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to an optoelectronic device based on wavelength division multiplexing. Background technique [0002] In recent years, broadband networks such as FTTx (Fiber-to-the-x) based on optical fiber communication can provide users with high-speed voice, data and video services, and have developed rapidly. In the existing broadband network, CATV (CommunityAntennaTelevision) service is not yet supported. Therefore, in order to expand the application functions of the broadband network, it is necessary to upgrade the existing broadband network to support CATV services, and at the same time, the original network should be changed as little as possible. [0003] The existing commonly used upgrade method is at the local end of the optical network, for example, the optical line terminal (OLT, OpticalLineTerminal) at the optical network end broadcasts CATV signals, and in the optical device of t...

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Problems solved by technology

[0010] It can be seen from the above that the size of the existing optoelectronic device based on wavelength division multiplexing is limited by assembly, and the outer diameter is equivalent to the detector. Considering the mechanical strength requirements of the optoelectronic device, the wall of the tube shell should not be too thin. Therefore, The inner diameter of the shell is very limited; furthermore, due to the limitation of the signal spot size from the double pigtail collimator, the size of the WDM filter cannot be too small, so that in the limited space in the shell, by adjusting the WDM filter The installation angle is limited, the adjustment margin is limited, the angle adjustment is very difficult, the angle adjustment takes a long time, and the adjustment efficiency is low

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