Abstract

A volume grating based holographic sensor on a flexible substrate for real-time characterization of the bending deformation of polymer has been studied. Two kinds of deformations, i.e., unilateral and bilateral bending, are analyzed by using the diffraction spectrum of a transmission grating. The dependence of the peak wavelength on the angle displacement in unilateral bending presents a linear relationship. The relation between the peak wavelength and the curvature radius in bilateral bending is also a linear relationship. The maximum bending angle is 18 deg in unilateral bending, and the curvature radius reduces to 44 mm in bilateral bending. The diffraction spectrum coverage is up to 200 nm. In straightening a curved grating, the spatial width of the rainbow spectrum presents a linear relation to the curvature radius. The sensing feedback of bending deformation provides an effective method for characterizing the bending movement of polymer. It can even qualitatively present the deformation by observing the center color and its width with the naked eye. The optical measurement of bending deformation further validates the practical applicability of the holographic sensor.

© 2020 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Micro-deformation response of a holographic sensor in highly stretchable polymer hydrogel

Dan Yu, Hongpeng Liu, Rui Wang, Li Li, Suhua Luo, Jiang Lv, and Weibo Wang
Opt. Lett. 43(13) 3037-3040 (2018)

Bend-induced long period grating in a helical core fiber

Kinga Zolnacz, Maciej Napiorkowski, Anna Kiczor, Mariusz Makara, Pawel Mergo, and Waclaw Urbanczyk
Opt. Lett. 45(7) 1595-1598 (2020)

Chirping fiber Bragg gratings within additively manufactured polymer packages

John Canning and Asma Ziyani
Opt. Lett. 45(8) 2235-2238 (2020)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription