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THz porous fibers: design, fabrication and experimental characterization

2009; Optica Publishing Group; Volume: 17; Issue: 16 Linguagem: Inglês

10.1364/oe.17.014053

1094-4087

Shaghik Atakaramians, Shahraam Afshar V., Heike Ebendorff‐Heidepriem, M. Nagel, Bernd Fischer, Derek Abbott, Tanya M. Monro,

Microwave Engineering and Waveguides

Porous fibers have been identified as a means of achieving low losses, low dispersion and high birefringence among THz polymer fibers.By exploiting optical fiber fabrication techniques, two types of THz polymer porous fibers-spider-web and rectangular porous fibers-with 57% and 65% porosity have been fabricated.The effective refractive index measured by terahertz time domain spectroscopy shows a good agreement between the theoretical and experimental results indicating a lower dispersion for THz porous fiber compared to THz microwires.A birefringence of 0.012 at 0.65 THz is also reported for rectangular porous fiber.