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Method and system for realizing laser safety in optical fiber communication system

An optical fiber communication system and laser technology, applied in transmission systems, wavelength division multiplexing systems, electromagnetic wave transmission systems, etc., can solve the problem that WDM systems cannot guarantee safety, and achieve the effect of preventing people from being injured by lasers and ensuring safety.

Inactive Publication Date: 2006-10-25
HUAWEI TECH CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and system for realizing laser safety in an optical fiber communication system, so as to solve the problem that the safety cannot be guaranteed in a WDM system without an amplifier

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  • Method and system for realizing laser safety in optical fiber communication system
  • Method and system for realizing laser safety in optical fiber communication system
  • Method and system for realizing laser safety in optical fiber communication system

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Embodiment Construction

[0050] Such as figure 2 Shown is a point-to-point WDM network without optical amplifiers. The first site 21 and the second site 22 are respectively connected by two optical fibers in the east direction (the first direction) and the west direction (the second direction). The above-mentioned first site 21 and second site 22 can be not only a main node in the optical network, but also a branch node or a relay node. In the east direction, in the WDM system of the first station 21, the optical signals with different wavelengths output by the transmitters Tx1, Tx2, ..., TxN are input into the first multiplexer 211, and the first The multiplexer 211 multiplexes the input multi-wavelength signals and outputs them to the transmission fiber. The multiplexed signal is received by the second demultiplexer 221 of the second site 22, and after demultiplexing by the second demultiplexer 221, the corresponding wavelengths are output to the receivers Rx1', Rx2', ..., RxN' respectively. Sim...

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Abstract

This invention relates to a method for realizing laser safety in a WDM system used in a first and a second stations connected by a first and a second fibers, in which, the first fiber transmits optical signals from the first station to the second and the second fiber transmits optical signals from the second to the first one characterizing in including the following steps: a, judging if the optical power of the optical signals transmitted to the first stop by the second fiber is lost, b, if the power is lost, the output power of multiple transmitters of the first stop is reduced or closed or that of the power control module of the first stop is reduced or closed to reduce or close the optical power output to the first fiber from the first stop. This invention also provides a corresponding system.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to a method and system for realizing laser safety in an optical fiber communication system. Background technique [0002] The safety of lasers in optical fiber communication systems needs to be considered, especially in multi-wavelength systems and high-power systems. In existing systems, APR (Automatic Power Reduction) or APSD (Automatic Power Shutdown) processes are usually used to achieve safety protection: in the event of interruption of the main optical channel (when the optical cable is cut, the device fails or the optical connector is pulled out) When the optical power is lost), the system implements the APR / APSD process to protect the safety of human eyes. ITU-T G.664 has detailed regulations on the laser safety process and requirements of single-wavelength and multi-wavelength systems in SDH (Synchronous Digital Hierarchy) and OTN (Optical Transport Network) syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/564H04J14/02
Inventor 熊前进
Owner HUAWEI TECH CO LTD