Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/639773
Title: Spatial Resolution Enhancement Based on Peak Splitting in Low-Coherence Interferometry Signal
Authors: Hongxia Zhang;Feng Wang;Chongxiang Zeng;Yaguang Ren;Dagong Jia;Tiegen Liu
subject: Fiber optics systems|Birefringence|Optical properties of photonic materials|Polarization maintaining fiber|Low coherence interferometry|Metrology
Year: 2016
Publisher: IEEE
Abstract: Low-coherence interferometry (LCI) has been a useful tool to detect distributed polarization coupling (DPC) points in polarization-maintaining fiber (PMF). However, due to birefringence dispersion, two close coupling points in long PMF are usually difficult to be distinguished. A novel method in our paper has been presented to tackle the problem. When the product of birefringence dispersion and fiber length called accumulated dispersion (AD) is numerically enough, the coherence envelopes caused by two close coupling points will split into periodic multiple peaks in the overlapping region, and the distance of the two coupling points can be further demodulated from the frequency of splitting peaks. An experimental setup based on LCI has been established with two Panda PMFs of 600 and 950 m under test. Experimental results show that the measuring errors of two close coupling points distance were less than 5%. When AD reached as high as 29 and 46 fs/nm, the spatial resolution was increased by 13-fold and 20-fold, respectively. The constraint conditions to ensure the appearance of peak splitting are also discussed. It indicates that our method may show a potential application of spatial resolution enhancement in high dispersive LCI without dispersion compensation.
Description: 
URI: http://localhost/handle/Hannan/183970
http://localhost/handle/Hannan/639773
ISSN: 1943-0655
volume: 8
issue: 4
Appears in Collections:2016

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Title: Spatial Resolution Enhancement Based on Peak Splitting in Low-Coherence Interferometry Signal
Authors: Hongxia Zhang;Feng Wang;Chongxiang Zeng;Yaguang Ren;Dagong Jia;Tiegen Liu
subject: Fiber optics systems|Birefringence|Optical properties of photonic materials|Polarization maintaining fiber|Low coherence interferometry|Metrology
Year: 2016
Publisher: IEEE
Abstract: Low-coherence interferometry (LCI) has been a useful tool to detect distributed polarization coupling (DPC) points in polarization-maintaining fiber (PMF). However, due to birefringence dispersion, two close coupling points in long PMF are usually difficult to be distinguished. A novel method in our paper has been presented to tackle the problem. When the product of birefringence dispersion and fiber length called accumulated dispersion (AD) is numerically enough, the coherence envelopes caused by two close coupling points will split into periodic multiple peaks in the overlapping region, and the distance of the two coupling points can be further demodulated from the frequency of splitting peaks. An experimental setup based on LCI has been established with two Panda PMFs of 600 and 950 m under test. Experimental results show that the measuring errors of two close coupling points distance were less than 5%. When AD reached as high as 29 and 46 fs/nm, the spatial resolution was increased by 13-fold and 20-fold, respectively. The constraint conditions to ensure the appearance of peak splitting are also discussed. It indicates that our method may show a potential application of spatial resolution enhancement in high dispersive LCI without dispersion compensation.
Description: 
URI: http://localhost/handle/Hannan/183970
http://localhost/handle/Hannan/639773
ISSN: 1943-0655
volume: 8
issue: 4
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7488277.pdf1.36 MBAdobe PDFThumbnail
Preview File
Title: Spatial Resolution Enhancement Based on Peak Splitting in Low-Coherence Interferometry Signal
Authors: Hongxia Zhang;Feng Wang;Chongxiang Zeng;Yaguang Ren;Dagong Jia;Tiegen Liu
subject: Fiber optics systems|Birefringence|Optical properties of photonic materials|Polarization maintaining fiber|Low coherence interferometry|Metrology
Year: 2016
Publisher: IEEE
Abstract: Low-coherence interferometry (LCI) has been a useful tool to detect distributed polarization coupling (DPC) points in polarization-maintaining fiber (PMF). However, due to birefringence dispersion, two close coupling points in long PMF are usually difficult to be distinguished. A novel method in our paper has been presented to tackle the problem. When the product of birefringence dispersion and fiber length called accumulated dispersion (AD) is numerically enough, the coherence envelopes caused by two close coupling points will split into periodic multiple peaks in the overlapping region, and the distance of the two coupling points can be further demodulated from the frequency of splitting peaks. An experimental setup based on LCI has been established with two Panda PMFs of 600 and 950 m under test. Experimental results show that the measuring errors of two close coupling points distance were less than 5%. When AD reached as high as 29 and 46 fs/nm, the spatial resolution was increased by 13-fold and 20-fold, respectively. The constraint conditions to ensure the appearance of peak splitting are also discussed. It indicates that our method may show a potential application of spatial resolution enhancement in high dispersive LCI without dispersion compensation.
Description: 
URI: http://localhost/handle/Hannan/183970
http://localhost/handle/Hannan/639773
ISSN: 1943-0655
volume: 8
issue: 4
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7488277.pdf1.36 MBAdobe PDFThumbnail
Preview File