Microstructured optical fiber

摘要

An optical fiber (1) suitable for use in a single fiber or multifiber optical connector or array is structured with a core region (2) and a cladding region (3) surrounding the core region, and exhibits a bending loss of a fundamental mode of the fiber at a wavelength lambda is lower than 0.1 dB/m at a diameter of 15mm, a mode-field diameter of the fundamental mode at an end of the fiber at the wavelength lambda is between 8.0 mu m and 50 lambda , and a bending loss of a first higher-order mode at the wavelength lambda is higher than 1 dB/m at a diameter of 30mm. The fiber may be multistructured, wherein the cladding region comprises a main medium (6) and a plurality of sub medium regions (7) therein to form a spatially uniform average refractive index.