The Ante-Nicene Fathers; translations of the writings of the Fathers down to A. D. 325.

First published under title: Ante-Nicene Christian library.

The mind of Mencius; or, Political economy founded upon moral philosophy. A systematic digest of the doctrines of the Chinese philosopher Mencius, B. C. 325. The original text classified and translated with notes and explanations,

Mode of access: Internet.

Boulder site plan : U.S. Department of Commerce, Boulder Laboratories, 325 Broadway.

Mode of access: Internet.

$325,000,000 state of Illinois general obligation bonds : series of January 2006.

"It is expected that the Bonds will be available for delivery through the facilities of DTC on or about January 18, 2006."

The responsiveness summary of permit decisions for the city of Lake Forest and DK Recycling Systems, Inc.'s landscape waste compost facility and landscape waste transfer station, Lake Forest, Illinois : hearing file no. 325-97.

"January 1998."

The Ante-Nicene fathers : translations of the writings of the fathers down to A.D. 325 /

First published under title: Ante-Nicene Christian library, Edinburgh, 1867-97.

Photosensitivity mechanism of undoped poly(methyl methacrylate) under UV radiation at 325 nm and its spatial resolution limit

In this Letter, we provide evidence suggesting that the main photosensitive mechanism of an undoped poly(methyl methacrylate)-based microstructured optical fiber under UV radiation at 325 nm is a competitive process of both photodegradation and polymerization. We found experimentally that increasing strain during photo-inscription leads to an increased photosensitivity, which is evidence of photodegradation. Likewise, refractive index change in the fiber was measured to be positive, which provides evidence for further polymerization of the material. Finally, we relate the data obtained to the spatial recording resolution of the samples. © 2014 Optical Society of America.

Increase of the photosensitivity of undoped poly(methylmethacrylate) under UV radiation at 325 nm

In this paper we report, for the first time to our knowledge, an increase of the photosensitivity of a microstructured polymer optical fibre (mPOF) made of undoped PMMA due to applied strain during the fabrication of the gratings. In the work, fibre Bragg gratings (FBGs) have been fabricated in undoped PMMA mPOFs with a hexagonal structure of three rings in the inner cladding. Two sets of FBGs were inscribed at two different resonant wavelengths (827 nm and 1562 nm) at different strains using an UV He-Cd laser at 325 nm focused by a lens and scanned over the fibre. We observed an increase of the reflection of the fibre Bragg gratings when the fabrication strain is higher. The photosensitivity mechanism is discussed in the paper along with the chemical reactions that could underlie the mechanism. Furthermore, the resolution limit of the material was investigated. © 2014 Copyright SPIE.