9 July 2003 Surface modes and loss in air-core photonic bandgap fibers
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Proceedings Volume 5000, Photonic Crystal Materials and Devices; (2003) https://doi.org/10.1117/12.480052
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States
We briefly review recent progress in the fabrication and characterization of air-core photonic band-gap fibers. These are silica fibers with an hexagonal array of air holes in the cladding, and a larger air hole creating the core. Improved structural uniformity transverse to the fiber axis and down the fiber axis has yielded fibers with better transmission characteristics. We have measured a minimum loss of 13 dB/km at 1500 nm for a 100 m length of our fiber. This is a marked improvement over previous loss measurements for air-core fibers of any kind. A comparison of observed spectra and calculated gap modes suggests that coupling between surface modes and core modes may be an important contributor to the remaining loss. We present a detailed analysis of the expected losses associated with mode crossings between the fundamental core mode and surface modes, showing that Lorentzian-shaped loss peaks are predicted.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Douglas C. Allan, Nicholas F. Borrelli, Michael T. Gallagher, Dirk Müller, Charlene M. Smith, Natesan Venkataraman, James A. West, Peihong Zhang, Karl W. Koch, "Surface modes and loss in air-core photonic bandgap fibers", Proc. SPIE 5000, Photonic Crystal Materials and Devices, (9 July 2003); doi: 10.1117/12.480052; https://doi.org/10.1117/12.480052

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