The glass portion of the coated fibers may be drawn from a
Modified CVD (MCVD), inside vapor deposition, and plasma-enhanced Include external CVD processes, axial vapor deposition processes, Used in the coated optical fibers of the present invention. Known and are suitable for producing the core and cladding layer Processes, also commonly referred to as chemical vapor deposition Suitable methods include: the doubleĬrucible method, rod-in-tube procedures, and doped deposited silica The core and cladding regions of fiber 6 may be produced inĪ single-step process or multi-step process by methods which are DELTA.sub.4 may be equal or either may be alpha.5, and r.sub.1/r.sub.2 is greater than 0.4 and The optical fiber of claim 1, wherein said core region has anĪlpha value. alpha.>5 and r.sub.1/r.sub.2 is greater than 0.4ģ.
Wavelength (.lamda.sub.0) between 1300 nm and 1324 nm.Ģ. Wavelength.ltoreq.1060 nm a bending loss BL at 1310 nm, asĭetermined by mandrel wrap test using a mandrel comprising aĭiameter of 15 mm, less than 1.0 dB/turn and a zero dispersion Said optical fiber has: a mode field diameter (MFD) at 1310 nm such Region surrounding said depressed index cladding region, said outerĬladding region comprising an outer radius r.sub.4 and wherein Said core region, said depressed index cladding region comprisingĪn inner radius r.sub.2 such that r.sub.1/r.sub.2 is greater thanĠ.4 and less than 0.65, an outer radius r.sub.3 and a minimum microns a depressed index cladding region surrounding DELTA.sub.1MAXīetween 0.25 to 0.4%, and core volume between 3.0%-sq. Microns, a maximum relative refractive index. An optical fiber comprising: a silica based core regionĬomprising an outer radius r.sub.1 in the range from 3.6 to 5.4 Snigdharaj Kumar (Wilmington, NC) Tandon (Corning, NY) Bookbinder Dana Craig (Corning, Integrated systems and opticalĬommunication systems that employ the optical fibers are also Is expected to be particularly useful for data center applicationsĭue to its ability to efficiently optically couple with VCSELs and
Three main embodiments of the opticalįiber allow for single-mode operation at wavelengths greater thanĩ80 nm, and have a large effective area with low bend losses and Optical fibers having a large effective area and a low cutoff SINGLE-MODE LARGE EFFECTIVE AREA OPTICAL FIBERS WITH LOW CUTOFF Invention is credited to Scott Robertson Bickham, Dana Craig Bookbinder, Ming-Jun Li, Snigdharaj Kumar Mishra, Pushkar Tandon.
The applicant listed for this patent is Corning Incorporated. patent application number 16/419403 was filed with the patent office on for single-mode large effective area optical fibers with low cutoff wavelength.
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