OPTICAL WAVEGUIDE, METHOD OF ITS PRODUCTION, AND ITS USE

摘要

An optical waveguide with a longitudinal direction and a cross-section perpendicular thereto for propagating optical radiation at a free-space wavelength lambda, the optical waveguide comprising: a core region (103), a cladding region (100,101,102) surrounding the core region, and a substantially one-dimensional (1D) periodic structure of structural elements with a period Lambda; wherein said structural elements comprises cross-sectionally extended continuous elements; use of such an optical waveguide in optical amplifier, a tunable optical amplifier, an optical laser, and a tunable optical laser; a preform for its production; and a method of its production.