| 摘要 |
Disclosed is a waveguide electromagnetic coupler comprising: a waveguide having a first and second termini, such as an optical fibre. The waveguide has at least one point with no cladding between the first and second termini. The coupler also includes at least one electromagnetic source producing an electromagnetic wave, the source being in direct optical communication with the waveguide at the at least one point with no cladding. The waveguide is configured to guide a fraction of the electromagnetic wave when the electromagnetic wave is directly incident upon said waveguide at the at least one region with no cladding. The intensity of said fraction of the electromagnetic wave is determined by a detector that is placed at either termini of the waveguide. |
