Thermal Poling of Boron-Codoped Germanosilicate Fibre

Wei XU  Mark JANOS  Danny WONG  Simon FLEMING  

IEICE TRANSACTIONS on Communications   Vol.E82-B    No.8    pp.1283-1286
Publication Date: 1999/08/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Fibers and Cables
optical communication,  communication cable and wave guides,  

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The dependence of a linear electro-optic (LEO) coefficient induced into boron-codoped germanosilicate fibre on thermal poling conditions (poling voltage, poling temperature and poling time) has been systematically carried out using a Mach-Zehnder interferometer. The LEO coefficient increases as a 2.7 power law with the poling voltage; it can be maximally induced into the silica fibre within a temperature range from 250 to 300; it exponentially increases with poling time until saturation but after that it then decreases. Possible mechanisms of thermal poling are discussed in the light of the experimental results.