Investigation of PZT driven tunable optical filter nonlinearity using FBG optical fiber sensing system

被引：55

作者：

Liu, K. ^{[1
,2
]}

Jing, W. C. ^{[1
,3
]}

Peng, G. D. ^{[3
]}

Zhang, J. Z. ^{[4
]}

Jia, D. G. ^{[1
,2
]}

Zhang, H. X. ^{[1
,2
]}

Zhang, Y. M. ^{[1
,2
]}

机构：

[1] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Minist Educ, Key Lab Optoelect Informat & Tech Sci, Tianjin 300072, Peoples R China

[3] UNSW, Sch Elect Engn & Telecommun, Sydney, NSW, Australia

[4] Harbin Engn Univ, Dept Phys, Harbin, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2008年 / 281卷 / 12期

关键词：

fiber optics sensors; Fabry-Perot; nonlinear optical devices; gratings;

D O I：

10.1016/j.optcom.2008.02.034

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The nonlinearity of a piezo-electrical transducer (PZT) driven tunable optical filter (TOF) is investigated and evaluated using FBG optical fiber sensing system including a broadband optical source and a tunable laser (TL) with a group of fiber Bragg gratings (FBGs). Polynomial fit is adopted to model the nonlinearity. Under three-order polynomial fit, the random error in wavelength measurement using this TOF and a reference FBG is minimized to be below 20 pm. At the same time, the absolute error in wavelength measurement is kept below 0.25 nm. Under four-order or higher polynomial fit, a sharp increase of the random measurement error is observed. This research reveals-the possibility of using PZT driven TOFs in optical spectroscopy where high resolution, high-accuracy, and fast time-response is required. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：3286 / 3290

页数：5

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