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US 6,581,414 B2Granted
Optical nonlinearity material and production method therefor
AssigneesToyota Jidosha Kabushiki Kaisha, Toyota School Foundation
InventorsTakumi Fujiwara, Syuji Matsumoto, Akira Ikushima
Life of this patent
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Abstract
Voltage is applied between electrodes (14a, 14b) under UV irradiation to perform a UV excitation poling, thereby producing microcrystal particles at a core unit (10a). Accordingly, second-order optical nonlinearity is developed at the core unit (10a) of an optical fiber (10). Under a high-temperature condition, a second-order optical nonlinearity can be imparted by a comparatively low-voltage UV excitation poling when a second-order optical nonlinearity decreases.
Claims4
A method for manufacturing an optical non-linearity material comprising:
- subjecting glass material to UV-excited poling having UV intensity 10 mJ/cm2 or over and electric field intensity 3×104 V/cm or over to obtain micro-crystal particles made of partially crystallized glass phase, dispersing in the glass phase to form a resultant glass material, and
- applying subsequent UV-excited poling to the resultant glass material.
Dependencies are inferred from the claim text.