All-fiber mode converter based on superimposed long period fiber gratings

In this paper, a novel broadband all-fiber mode converter is proposed and experimentally demonstrated. Through writing a pair of superimposed long period fiber gratings（SLPFGs） in tow-mode fiber（TMF） with a CO_2 laser, the mode converter can realize the conversion from LP_（01） to LP_（11） owing to th...

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Published inOptoelectronics letters Vol. 14; no. 2; pp. 81 - 83
Main Author 薛艳茹;毕卫红;金娃;田朋飞;江鹏;刘强;靳云
Format Journal Article
LanguageEnglish
Published Tianjin Tianjin University of Technology 01.03.2018
Springer Nature B.V
Subjects
Broadband
Carbon dioxide
Carbon dioxide lasers
Converters
Division
Lasers
Multiplexing
Optical Devices
Optics
Phase matching
Photonics
Physics
Physics and Astronomy
模式变换器;纤维;栅栏;加长;试验性;小尺寸
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ISSN1673-1905
1993-5013
DOI10.1007/s11801-018-7141-y

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Summary:In this paper, a novel broadband all-fiber mode converter is proposed and experimentally demonstrated. Through writing a pair of superimposed long period fiber gratings（SLPFGs） in tow-mode fiber（TMF） with a CO_2 laser, the mode converter can realize the conversion from LP_（01） to LP_（11） owing to the phase matching condition. Numerical and experimental results show that the bandwidth of this mode converter is 3 times broader than that of a single grating converter. The converter has low loss, high coupling efficiency, small size and is easy to fabricate, so it can be widely used in mode-division multiplexing.
Bibliography:12-1370/TN
In this paper, a novel broadband all-fiber mode converter is proposed and experimentally demonstrated. Through writing a pair of superimposed long period fiber gratings（SLPFGs） in tow-mode fiber（TMF） with a CO_2 laser, the mode converter can realize the conversion from LP_（01） to LP_（11） owing to the phase matching condition. Numerical and experimental results show that the bandwidth of this mode converter is 3 times broader than that of a single grating converter. The converter has low loss, high coupling efficiency, small size and is easy to fabricate, so it can be widely used in mode-division multiplexing.
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content type line 14
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-018-7141-y