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Method and system for measurement of optical device on the basis of optical double-side band modulation

A technology of measurement system and double-sideband, applied in optical instrument testing, measurement device, machine/structural component testing, etc., can solve the problems of low measurement efficiency, limited bandwidth, small dynamic range, etc., to achieve wide measurement range and low cost , the effect of large dynamic range

Active Publication Date: 2016-05-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, the sideband suppression ratio of the optical SSB signal is limited, and the vestigial sideband will introduce measurement errors, making its dynamic range smaller
This technique uses only one sideband for measurement, resulting in limited bandwidth and low measurement efficiency
In addition, the optical single sideband modulator with broadband and high sideband suppression ratio has a complex structure and high cost, making the measurement device expensive

Method used

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  • Method and system for measurement of optical device on the basis of optical double-side band modulation
  • Method and system for measurement of optical device on the basis of optical double-side band modulation
  • Method and system for measurement of optical device on the basis of optical double-side band modulation

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0024] The idea of ​​the present invention is to use the optical double-sideband signal to realize the measurement of the spectral response of the optical device, respectively use the ordinary optical double-sideband signal and the optical Hilbert-transformed optical double-sideband signal to measure the optical device to be measured, and then through data processing, Obtain the amplitude response and phase response of the optical device under test.

[0025] figure 1 It is a schematic diagram of the system structure of the present invention, and the system includes a light source, a microwave frequency sweep source, an optical double sideband modulator, an optical Hilbert converter, a photoelectric detector, a microwave amplitude and phase receiving module, and a control and data processing unit. The optical double sideband modulator modulates the...

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Abstract

The present invention discloses a method and system for measurement of an optical device on the basis of optical double-side band modulation, belonging to the fields of optical device measurement and microwave photonics technologies. The method provided by the invention employs general optical double-side band modulation signals and optical double-side band signals after Hilbert transform to measure the spectral response of an optical device to be measured, and employs the data processing technology to modulate and obtain the spectral response of an optical device to be measured (including range response and phase response). The present invention further discloses an optical device spectral response measurement system on the basis of optical double-side band modulation. Compared with an optical device spectral response measurement technology in the prior art, the method and system for measurement of an optical device on the basis of optical double-side band modulation have larger dynamic range, wider measurement range and lower cost.

Description

technical field [0001] The invention relates to an optical device measurement method and a measurement system based on optical double sideband modulation, and belongs to the technical fields of optical device measurement and microwave photonics. Background technique [0002] In recent years, the continuous emergence of new services, ever-increasing service quality requirements, and the exponential growth of access equipment have made the spectrum resources that were once considered inexhaustible more and more tense, improving spectrum utilization Efficiency has become an important solution and an inevitable development trend. This requires one to move from a single-dimensional (mainly amplitude), coarse-grained manipulation of the spectrum to a multi-dimensional, precise control of the spectrum. Multi-dimensional spectral resources including amplitude, phase, frequency, polarization and even mode field distribution are used to carry information, and the transmission, recept...

Claims

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Application Information

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IPC IPC(8): G01M11/02
CPCG01M11/0292
Inventor 潘时龙薛敏李树鹏赵永久
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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