| 摘要 |
The invention concerns an optical filter, the method for making it and its use for a wavelength division multiplexing optical system. The technical field of the invention is that of the manufacture of optical fibre telecommunication system. The inventive optical component (3) comprises at least a thin layer (14) deposited on a substrate (13) and comprises at least a pluri-periodic resonant structure or grating including several contacts (15, 16) or patterns uniformly spaced along two directions, the structure or grating being etched in at least a thin layer, so as to form a bandpass filter whereof the bandwidth is centred on the wavelength corresponding to the resonance of said resonant structure. |
