A hollow-core photonic bandgap fiber polarizer may include a core, an inner cladding surrounding the core, the inner cladding including a plurality of capillaries, and an outer cladding at least partially surrounding the inner cladding. A section of the capillaries distal to the core is asymmetric r.....
[Detail]
Photonic band gap (PBG) materials are those periodic composites that possess spectral gaps in the frequency spectrum, in which electromagnetic waves cannot propagate in any direction within the material. Conventional PBG are based on Bragg scattering which limits the size of PBG structures for low-f.....
[Detail]
This is a powerful search engine for images. A method for characterizing image contents automatically or semi-automatically using image acquisition parameters and metadata is presented. The method establishes probabilistic and deterministic relationships between different types of metadata and the s.....
[Detail]
Most of the dielectric ceramic compositions consist of three or more different lead-based or non-lead ceramics. These materials and their solid solutions can give high dielectric constants (er>10000) but the disadvantage is large fluctuations in the dielectric constant with increasing or decreasing .....
[Detail]
Lighting device
[Detail]
| |< <- | [155] [156] [157] [158] [159] [160] [161] [162] [163] [164] [165] | -> >| |
