Non-invasive real-time characterization of hollow-core photonic crystal fibers using whispering gallery mode spectroscopy

Frosz MH, Pennetta R, Enders MT, Ahmed G, Russell PSJ (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Optics Express Optical Society of America

Book Volume: 27

Pages Range: 30842-30851

Journal Issue: 21

DOI: 10.1364/OE.27.030842

Abstract

Single-ring hollow-core photonic crystal fibers, consisting of a ring of one or two thin-walled glass capillaries surrounding a central hollow core, hold great promise for use in optical communications and beam delivery, and are already being successfully exploited for extreme pulse compression and efficient wavelength conversion in gases. However, achieving low loss over long (km) lengths requires highly accurate maintenance of the microstructure—a major fabrication challenge. In certain applications, for example adiabatic mode transformers, it is advantageous to taper the fibers, but no technique exists for measuring the delicate and complex microstructure without first cleaving the taper at several positions along its length. In this Letter, we present a simple non-destructive optical method for measuring the diameter of individual capillaries. Based on recording the spectrum scattered from whispering gallery modes excited in the capillary walls, the technique is highly robust, allowing real-time measurement of fiber structure during the draw with sub-micron accuracy.

Authors with CRIS profile

Philip St. John Russell Lehrstuhl für Experimentalphysik (Alfried Krupp von Bohlen und Halbach-Professur)

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Frosz, M.H., Pennetta, R., Enders, M.T., Ahmed, G., & Russell, P.S.J. (2019). Non-invasive real-time characterization of hollow-core photonic crystal fibers using whispering gallery mode spectroscopy. Optics Express, 27(21), 30842-30851. https://doi.org/10.1364/OE.27.030842

MLA:

Frosz, Michael H., et al. "Non-invasive real-time characterization of hollow-core photonic crystal fibers using whispering gallery mode spectroscopy." Optics Express 27.21 (2019): 30842-30851.

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