| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | LASER A FIBRE DE PUISSANCE A CONVERSION DE MODE | EP01984196.4 | 2001-07-06 | EP1299930A1 | 2003-04-09 | HUIGNARD, Jean-PierreThales Intellectual Property; BRIGNON, ArnaudThales Intellectual Property |
| The invention concerns a pumped fibre laser comprising essentially a doped fibre (1), Said laser is mainly characterised in that the doped fibre is multimode (1) and it also comprises a spatial mode converting device (3) receiving the beam. Said multimode fibre has a core with diameter greater than 30 micrometers, even greater than 50 micrometers. | ||||||
| 122 | SHORT PULSE MID-INFRARED PARAMETRIC GENERATOR FOR SURGERY | EP98903709.8 | 1998-01-28 | EP1006967A1 | 2000-06-14 | TELFAIR, William, B.; ZENZIE, Henry; MOULTON, Peter; HOFFMAN, Hannah, J. |
| A laser parametric generator for surgical applications is disclosed which utilizes short-pulse, mid-infrared radiation. The mid-infrared radiation may be produced by a pump laser source (20), such as a neodymium-doped laser, which is parametrically downconverted in a suitable nonlinear crystal (15) to the desired mid-infrared range. The short pulses reduce unwanted thermal effects and changes in adjacent to potentially submicron levels. The parametrically converted radiation source preferably produces pulse durations shorter than 25 ns at or near 3.0 νm but preferably close to the water absorption maximum associated with the tissue. The down-conversion to the desired mid-infrared wavelength is preferably produced by a nonlinear crystal (15) such as KTP or its isomorphs. In one embodiment, a non-critically phased-matched crystal is utilized to shift the wavelength from a near-infrared laser source emitting at or around 880 to 900 nm to the desired 2.9 to 3.0 νm wavelength range. A fiber, fiber bundle or another waveguide means utilized to separate the pump laser from the optical parametric oscillation (OPO) cavity is also included as part of the invention. | ||||||
| 123 | ELECTRICALLY-DRIVEN, HIGH EXTINCTION RATIO OPTICAL MODULATOR | PCT/IT2007000588 | 2007-08-14 | WO2009022362A8 | 2009-09-17 | DISPENZA MASSIMILIANO; VARASI MAURO |
| Disclosed herein is an optical modulator (1) coupled to an optical fiber (7) and providing a modulated optical signal based on the input optical signal received from the optical fiber; the optical modulator (1) is provided with an electro-optical substrate (3) and an optical waveguide structure (2) formed in the substrate (3) and having an input branch (6) coupled to the optical fiber (7), an output branch (10) outputting the modulated optical signal, and a first and a second arms (12a, 12b) branching off from the input branch (6) and merging into the output branch (10). In particular, the input branch (6) is configured so as to be at least bimodal, and the optical fiber (7) is so arranged with respect to the input branch (6) to excite a first and at least a second optical propagation mode and to provide the first and second optical propagation modes with respective given amounts of optical power, to compensate for different optical losses of the first and second arms (12a, 12b). | ||||||
| 124 | PROCESSING OF MULTIMODE OPTICAL SIGNALS | PCT/US2015067229 | 2015-12-21 | WO2016100989A3 | 2016-08-25 | STERN BRIAN; LIPSON MICHAL |
| This patent document provides optical processing and switching of optical channels based on mode-division multiplexing (MDM) and wavelength division multiplexing (WDM). In one implementation, a method is provided for processing different optical signal channels to include receiving different input optical signal channels in different optical waveguide modes and in different wavelengths; converting input optical signal channels in multimodes into single-mode optical signal channels, respectively; subsequent to the conversion, processing single-mode optical signal channels obtained from the different input optical signal channels to re-group single-mode optical signal channels into different groups of processed single-mode optical signal channels; and converting different groups of the processed single-mode optical signal channels into different groups of output optical signal channels containing one or more optical signal channels in multimodes multimode signals to direct the groups as different optical outputs. | ||||||
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