10G GPON OLT optical module

Abstract

The invention relates to a 10G GPON OLT optical module which comprises an OTDR processing unit, a second light receiver, an optical isolator, a first light receiver, a light emitter, a signal intensity detection unit and a microprocessor, wherein the OTDR processing unit is connected with the light emitter, the light emitter is connected with the optical isolator, one end of the second light receiver is connected with the optical isolator, the other end of the second light receiver is connected with the OTDR processing unit, one end of the first light receiver is connected with the optical isolator, the other end of the first light receiver is connected with the input end of the signal intensity detection unit, the signal intensity detection unit is connected with the microprocessor, and the light emitter transmits the optical signals of the OLT optical module and the OTDR fault detection signals of the OTDR processing unit simultaneously to fiber through the optical isolator. The OTDR processing unit is integrated in the optical module, thereby facilitating searching the position information of fiber breakpoints and saving labor and resources.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to a 10G GPON OLT optical module. Background technique [0002] With the popularization and large-scale application of optical fiber communication technology, the maintenance of optical fiber network has become a problem. Especially when the PON (Passive Optical Network, referred to as PON) network develops rapidly, expands, and gradually forms a large-scale application, the maintenance problem of optical fiber and cable is gradually exposed, and has become one of the main problems restricting the development of the industry. If the optical fiber breaks, it is very troublesome to first locate the breakpoint of the optical fiber. It is necessary to send technicians to the site to join hands with the handheld optical time-domain reflectometer OTDR (Optical Time-Domain Reflectometer, hereinafter referred to as OTDR). Pulse into the fiber, and then determine the distance to ...

AI Technical Summary

Problems solved by technology

Due to the high price of handheld OTDR equipment, the OTDR functional module has been integrated into the OLT optical module at present. However, the disadvantages of this type of OLT optical module when performing fiber fault testing are: the OTDR detection signal transmitted by the module to the fault point is different from the The OTDR detection signal reflected and scattered back from the fault point will produce optical interference, which will affect the OTDR detection performance of the OLT optical module, and will also cause the entire OLT optical module to work unstable.

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