Compact Electrically Tunable Waveplate Based on Liquid Crystal Photonic Bandgap Fibers

Wei, Lei; Alkeskjold, Thomas Tanggaard; Keller, Stephan Urs; Lindhard, Jonas Michael; Jensen, Helle Vendelbo; Nielsen, Kristian; Boisen, Anja; Bjarklev, Anders

doi:10.1364/cleo.2009.cmw4

“…Although even one-axis tuning can lead to many interesting effects, in particular in the terms of switchable polarization properties, i.e. tunable retarders/waveplates [13,14], attenuators [15][16][17] and tunable polarizers [18,19].…”

Section: Introductionmentioning

confidence: 99%

All-fiber tunable devices based on high-index photonic crystal fibers filled with liquid crystals

Ertman,

Chychłowski,

Bednarska

et al. 2023

Preprint

0

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In this paper we present all-in fiber tunable devices based on specially designed and optimized high-index photonic crystal fibers filled with nematic liquid crystals. A special host microstructured optical fibers have been designed and manufactured to ensure low-loss index guiding and mode field diameter matching to SMF-28 fiber, ensuring low losses on interconnections with leading in-out FC/PC connectorized pigtails. We present four types of tunable all-fiber devices: tunable retarders with tuning range as high as 20 λ, tunable polarizers with variable axis of polarization and continuously tunable polarization dependent losses, tunable and fully controllable polarization controller and finally indeterministic depolarizer in which depolarization is caused by random thermodynamic process. We also present a cost-effective method to achieve change in the direction of the steering electric field, which was controlled by custom-made programable controllers. Finally, we present a method for effective packaging for the proposed devices.

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Recent Progress in Liquid-Crystal Optical Fibers and Their Applications in Photonics

Ertman

¹

,

Rutkowska

²

,

Woliński

³

2019

J. Lightwave Technol.

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All-fiber tunable devices based on high-index photonic crystal fibers filled with liquid crystals

Ertman,

Chychłowski,

Bednarska

et al. 2023

Opt. Express

0

View full text Add to dashboard Cite

In this paper we present all-in fiber tunable devices based on specially designed and optimized high-index photonic crystal fibers filled with nematic liquid crystals. A special host microstructured optical fibers have been designed and manufactured to ensure low-loss index guiding and mode field diameter matching to SMF-28 fiber, ensuring low losses on interconnections with leading in-out FC/PC connectorized pigtails. We present four types of tunable all-fiber devices: tunable retarders with tuning range as high as 20 λ, tunable polarizers with variable axis of polarization and continuously tunable polarization dependent losses, tunable and fully controllable polarization controller and finally indeterministic depolarizer in which depolarization is caused by random thermodynamic process. We also present a cost-effective method to achieve change in the direction of the steering electric field, which was controlled by custom-made programable controllers. Finally, we present a method for effective packaging for the proposed devices.

show abstract

Compact Electrically Tunable Waveplate Based on Liquid Crystal Photonic Bandgap Fibers

Abstract: A compact tunable waveplate based on negative dielectric liquid crystal photonic bandgap fibers is presented. The birefringence can be tuned electrically to work as a quarter-wave or a half-wave plate in the wavelength range 1520nm-1580nm.

Cited by 3 publications

References 7 publications

All-fiber tunable devices based on high-index photonic crystal fibers filled with liquid crystals

All-fiber tunable devices based on high-index photonic crystal fibers filled with liquid crystals

Recent Progress in Liquid-Crystal Optical Fibers and Their Applications in Photonics

All-fiber tunable devices based on high-index photonic crystal fibers filled with liquid crystals

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