@inproceedings{18d2805bcb894b3e80cd444fdbd4ab9d,
title = "Observation of the photoscattering effect from supercontinuum-generating germanosilicate fiber",
abstract = "We observe a photosensitivity apparently different from that associated with fiber grating inscription in a supercontinuum-generating germanosilicate fiber. Transmission of intense femtosecond ∼800 nm pulses in the heavily Ge-doped fiber progressively produces a waveguide at the entrance of the fiber. The waveguide behaves as a multi-millimeter long fiber bandpass filter which scatters away light with wavelength shorter or longer than 850 nm. This photosensitivity is therefore termed as the photoscattering effect. A model incorporating color center formation is proposed to explain the underlying mechanism. A 5-photon absorption process likely serves as the common origin of this effect and the ∼800 nm photosensitivity producing low-loss waveguides in bulk silica glass and Type I-IR fiber Bragg gratings in side written optical fibers.",
keywords = "Nonlinear optics, Optical fiber, Photosensitivity, Supercontinuum generation",
author = "Haohua Tu and Marks, {Daniel L.} and Boppart, {Stephen A.}",
year = "2008",
month = jun,
day = "13",
doi = "10.1117/12.763000",
language = "English (US)",
isbn = "9780819470508",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Nonlinear Frequency Generation and Conversion",
note = "Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VII ; Conference date: 22-01-2008 Through 24-01-2008",
}