A microstructured optical fiber and a device for generating broadband white light

The invention relates to a microstructured optical fiber (20) for generating broadband white light, the fiber (20) comprising a fiber core (21) doped with germanium and silica cladding (22) surrounding the fiber core (21), the cladding (22) including a plurality of holes arranged in the form of a re...

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Bibliographische Detailangaben
Hauptverfasser:	LEPROUX, PHILIPPE, FLEUREAU, ANNE, LEMPEREUR, SIMON, COUDERC, VINCENT, KUDLINSKI, ALEXANDRE, MELIN, GILLES
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	The invention relates to a microstructured optical fiber (20) for generating broadband white light, the fiber (20) comprising a fiber core (21) doped with germanium and silica cladding (22) surrounding the fiber core (21), the cladding (22) including a plurality of holes arranged in the form of a regular mesh, the fiber being characterized in that the diameter ¦ of a hole in the cladding (22), the pitch between the respective centers of two neighboring holes in the cladding (22), and the refractive index difference n between the germanium-doped fiber core (21) and the silica of the cladding (22) are such that 0.6 ¤ ¦ / ¤ 1 3 ¼m ¤ ¤ 6.5 ¼m , and n = ¢ n max * f r with n max , i.e. the maximum refractive index difference between the germanium-doped fiber core and the silica of the cladding, being such that 10 × 10 - 3 ¤ n max ¤ 40 × 10 - 3 and f(r) being a function for the distribution of germanium-doping within the fiber core depending on the radius r of said core, such that the fiber (20) can generate white light on the fundamental mode over a wavelength band having a width of at least 1000 nm.