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    • 76. 发明授权
    • Non-zero dispersion shifted optical fiber having a large effective area
    • 非零色散位移光纤具有较大的有效面积
    • US08983260B2
    • 2015-03-17
    • US13017089
    • 2011-01-31
    • Pierre SillardDenis Molin
    • Pierre SillardDenis Molin
    • G02B6/36G02B6/02G02B6/036
    • G02B6/02019G02B6/02271G02B6/0228G02B6/0365G02B6/03683
    • A non-zero dispersion shifted optical fiber (NZDSF) includes a central core, an inner cladding, and an outer cladding. The central core has an outer radius r1 and a maximum refractive index difference Dn1 with respect to the outer cladding. The inner cladding includes a first intermediate cladding and a buried trench. The first intermediate cladding has an outer radius r2 and a refractive index difference Dn2 with respect to the outer cladding. The buried trench has an outer radius r3, a width w3, and a negative refractive index difference Dn3 with respect to the outer cladding. In some embodiments, the inner cladding includes a second intermediate cladding having an outer radius r4 and a refractive index difference Dn4 with respect to the outer cladding. For a radius of curvature of 30 millimeters at a wavelength of 1625 nanometers, the optical fiber typically exhibits bending losses of about 0.5 dB/100 turns or less. At a wavelength of 1550 nanometers, the optical fiber's effective area is typically about 95 μm2 or greater.
    • 非零色散位移光纤(NZDSF)包括中心芯,内包层和外包层。 中心纤芯具有相对于外包层的外半径r1和最大折射率差Dn1。 内包层包括第一中间包层和埋入沟槽。 第一中间包层具有相对于外包层的外半径r2和折射率差Dn2。 埋沟具有相对于外包层的外半径r3,宽度w3和负折射率差Dn3。 在一些实施例中,内部包层包括具有外半径r 4和相对于外包层的折射率差Dn4的第二中间包层。 对于波长为1625纳米的30毫米的曲率半径,光纤通常表现出约0.5dB / 100圈或更小的弯曲损耗。 在1550纳米的波长下,光纤的有效面积通常为约95μm2或更大。
    • 79. 发明授权
    • Graded-index multimode optical fiber
    • 分级折射多模光纤
    • US08432539B2
    • 2013-04-30
    • US13603930
    • 2012-09-05
    • Asghar GholamiDenis MolinPierre SillardYves Lumineau
    • Asghar GholamiDenis MolinPierre SillardYves Lumineau
    • G01N21/00
    • G02B6/0288G01M11/338
    • A method of classifying a graded-index multimode optical fiber includes taking a series of individual measurements at a single wavelength, and using the measurements to characterize the departure of the multimode optical fiber's actual index profile from the corresponding nominal index profile. The measurements, coupled with intermodal dispersion or EMB measurement, may be used to predict the approximate transmission properties of the optical fiber at wavelengths other than the measurement wavelength. It is desirable for a graded-index multimode optical fiber to possess, at a wavelength of 850 nanometers, a radial offset bandwidth of at least 6000 MHz·km for all radial offsets between 0 and about 70 percent of the radius of the optical fiber's core.
    • 对渐变折射率多模光纤进行分类的方法包括在单个波长下进行一系列单独的测量,并且使用这些测量来表征多模光纤的实际折射率分布与相应的标称折射率分布的偏离。 与多模式色散或EMB测量相结合的测量可用于预测光纤在测量波长以外的波长处的近似透射特性。 理想的是,渐变折射率多模光纤在850纳米的波长下具有至少6000MHz·km的径向偏移带宽,用于光纤芯的半径的0和约70%之间的所有径向偏移 。