Real-time control of micro/nanofiber waist diameter with ultrahigh accuracy and precision.
Opt Express
; 25(9): 10434-10440, 2017 May 01.
Article
em En
| MEDLINE
| ID: mdl-28468414
ABSTRACT
We demonstrated real-time control of micro/nanofiber waist diameter during fiber pulling process with ultrahigh accuracy and precision. A 785 nm CW laser was coupled into SMF-28e fiber to excite high-order modes. During the fiber-pulling process, the cutoffs of high-order modes contributed to sudden transmission intensity drops. By accurately measuring the time interval between two drops, we could precisely determine the time to stop the pulling process based on a target diameter. Our experimental results showed that both the accuracy and precision of diameter control were within 5 nm for an expected taper diameter ranging from 800 nm to 1300 nm.
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2017
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Article