Recently, optical absorption was found at 1. 52 mu m, influencing the transparency at 1. 55 mu m where single-mode fibers are operated (M. Ogai et al. , 1986). The cause of this absorption is discussed. Five kinds of pure-silica silicone-clad fiber were used. Hydrogen treatment, gamma irradiation, and electron spin resonance measurements were carried out. The results indicate that the 1. 52- mu m absorption is caused by hydrogen molecules which form a hydrogen bond with peroxy radicals.
|Title of host publication||Unknown Host Publication Title|
|Publisher||Optical Soc of America|
|Number of pages||1|
|Publication status||Published - 1987 Jan 1|
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