Evaluating method and parameter testing method for optical equipment of dense wavelength division multiplexing (DWDM) system

A technology of dense wavelength division multiplexing and optical equipment, applied in the field of optical communication, can solve problems such as large system impact, too large, no system optical equipment, etc., and achieve the effect of improving design level and reliability
CN102377480BActive Publication Date: 2015-01-28ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZTE CORP
Publication Date
2015-01-28

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Abstract

The invention discloses an evaluating method and a parameter testing method for optical equipment of a dense wavelength division multiplexing (DWDM) system and provides a standard parameter and an evaluating method for the optical equipment of the DWDM system as well as a testing method for the parameter. The evaluating method for the optical equipment comprises the following steps of: determining a phase parameter testing value of the optical equipment to be evaluated; comparing the phase parameter testing value with a phase parameter threshold; and evaluating whether the optical equipment is available or not. The parameter testing method comprises the following steps of: adjusting the phase parameter of the optical equipment within the determined channel frequency range; and when the transmission performance of the system is ensured, taking the phase parameter at the time as a first phase parameter threshold for evaluating the optical equipment within the channel frequency range.
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Description

technical field

[0001] The invention relates to the field of optical communication, in particular to a dense wavelength division multiplexing system optical equipment evaluation and parameter testing method. Background technique

[0002] With the growth of communication bandwidth, the optical transmission system develops rapidly. At present, a Dense Wavelength Division Multiplexing (DWDM, Dense Wavelength Division Multiplexing) system with a single-channel rate of 40 Gb / s and a frequency interval of 50 GHz has been commercially available. Due to the increase of the rate, such as 40Gb / s rate, the original OOK (On-Off Keying) modulation mode has greater transmission damage and its application is limited. DPSK (Differential Phase Shift Keying) or DQPSK (Differential Quadrature Phase Shift Keying) ) and other phase modulation methods are widely used. Services are carried in this phase modulation mode, and the optical filter parameters of the equipment have a great impact on th...

Claims

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