Optical signal-to-noise ratio monitoring device and method for wavelength division multiplexing system

A technology of wavelength division multiplexing and monitoring device, applied in the field of optical communication

Active Publication Date: 2017-02-08
ZTE CORP
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Problems solved by technology

[0005] Embodiments of the present invention provide an optical signal-to-noise ratio (OSNR) monitoring device and method for a wavelength division multiplexing system to solve the OSNR monitoring problem of an existing high-speed wavelength division multiplexing system

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  • Optical signal-to-noise ratio monitoring device and method for wavelength division multiplexing system
  • Optical signal-to-noise ratio monitoring device and method for wavelength division multiplexing system

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Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0028] The embodiment of the present invention utilizes the combination of the wavelength label technology and the traditional OPM technology to realize the OSNR monitoring of the high-speed wavelength division multiplexing system, wherein the wavelength label technology can refer to the Chinese post and telecommunications industry standard YD / T 2003-2009 "reconfigurable optical division Appendix D of "Technical Requirements for Insertion and Multiplexing (ROADM) Equipment" introduces the wavelength trace monitoring (wavelength tag) technology in ROADM applications. At the so...

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Abstract

An optical signal to noise ratio (OSNR) monitoring device and method for a wavelength division multiplexing system. The device comprises a wavelength label analyzing unit, an optical performance monitoring unit, and an OSNR calculation unit. The wavelength label analyzing unit receives a monitoring optical signal provided by a wavelength division multiplexing system, obtains signal power of a channel of each wavelength signal in the monitoring optical signal, and sending the signal power to the OSNR calculation unit. The optical performance monitoring unit receives a monitoring optical signal provided by the wavelength division multiplexing system, obtains the total power of the channels of all wavelength signals in the monitoring optical signal, and sends the total power to the OSNR calculation unit. The OSNR calculation unit obtains the OSNR of the wavelength division multiplexing system according to the signal power of each channel and the total power sent by the wavelength label analyzing unit and the optical performance monitoring unit.

Description

technical field [0001] The invention relates to optical communication technology, in particular to an optical signal-to-noise ratio (OSNR) monitoring device and method of a wavelength division multiplexing system. Background technique [0002] The Optical Signal to Noise Ratio (OSNR) of the WDM system is a key parameter to measure the transmission performance of the WDM system, defined as the signal power of the channel divided by the noise power within 0.1nm at the signal wavelength. With the development of the single-wavelength rate of the wavelength division multiplexing system to 40Gb / s and above, the monitoring of OSNR becomes more and more difficult. The traditional method is realized by interpolation, that is, the noise power outside the signal spectrum is first monitored, and then the noise power at the signal wavelength is obtained by the interpolation formula, and finally the OSNR is calculated. The interpolation method can well meet the OSNR monitoring of single-...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/079H04B10/071
CPCH04B10/0775H04J14/0221H04J14/0275
Inventor 沈百林华锋
Owner ZTE CORP
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