Generation and use of orbital angular momentum (OAM) of light is finding more and more interest in a wide variety of fields of photonics: communications, optical trapping, quantum optics, and many more [1]. In the investigation of such behavior, twisting of photonic crystal fibers shows interesting physical phenomena [2]. We previously reported the ability to create helical hollow fibers by mechanically twisting a tube lattice fiber made of polyurethane, the twist of which can be adjusted and reversed [3]. In this work we report how such deformation induces a mode transformation to an OAM mode, allowing a simple and tunable way to generate OAM modes. We take advantage of THz time domain spectroscopy to obtain information on both intensity and field components, and to be able to investigate how they change both in time and with frequency.

© 2017 IEEE

PDF Article
More Like This
Hollow-Core Antiresonant Fibers with a Twist

Alessio Stefani, Richard Lwin, Alexander Argyros, and Simon Fleming
AW4C.4 Australian Conference on Optical Fibre Technology (ACOFT) 2016

Quantization of orbital angular momentum in helically twisted photonic crystal fiber

G. K. L. Wong, X. M. Xi, M. S. Kang, H. W. Lee, and P. St. J. Russell
FTh3C.3 Frontiers in Optics (FiO) 2012

OAM carrying mode at Dirac point in Twisted Hollow core PCF

Rik Chattopadhyay and Shyamal Kumar Bhadra
JTu5A.71 Bragg Gratings, Photosensitivity and Poling in Glass Waveguides and Materials (BGPPM) 2018


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 Optica member, or as an authorized user of your institution.

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