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    • 2. 发明公开
    • DISPERSION COMPENSATING FIBER
    • 分散补偿纤维
    • EP1175632A1
    • 2002-01-30
    • EP00926319.5
    • 2000-04-24
    • CORNING INCORPORATED
    • BERKEY, George, E.JIANG, LeiPOWERS, Dale, R.SRIKANT, V.
    • G02B6/16
    • G02B6/03688C03B37/01413C03B37/01446C03B2201/12C03B2201/31C03B2203/22C03B2203/23C03B2203/26C03B2203/36C03B2207/36G02B6/02261G02B6/03677
    • Disclosed is a dispersion compensating optical fiber that includes a core surrounded by a cladding layer of refractive index nCL. The core includes at least three radially adjacent regions, a central core region, a moat region having a refractive index nM that is sufficiently lower than nCL such that ΔM ≤ -0.4 %, and a ring region. As the ring region exhibits sufficiently high refractive index at a sufficiently long distance from the outer edge of the moat region, the fiber can exhibit low values of negative dispersion slope at low values of negative dispersion and yet exhibit good bending loss. This ring region is also capable of imparting to the fiber a relatively high cutoff wavelength, so that the present invention is particularly well suited for use in L-band systems. A particularly suitable fiber has an index profile in which that part of the ring region at the transition between the moat and the ring region has a refractive index such that its delta value is close to zero. Also disclosed is a method of forming the fiber of the present invention.
    • 公开了一种色散补偿光纤,其包括由折射率为n CL的包层围绕的芯。 芯包括至少三个径向相邻区域,中心芯区,具有足够低于nCL的折射率nM(使得ΔM≤-0.4%)的壕沟区和环区。 由于环形区域在距离壕沟区域的外边缘足够长的距离处显示出足够高的折射率,所以在负色散的低值处纤维可呈现低的负色散斜率值,并且还表现出良好的弯曲损耗。 该环形区域还能够赋予光纤相对较高的截止波长,从而本发明特别适用于L波段系统。 特别合适的光纤具有折射率分布,其中在壕沟和环形区域之间的过渡处的环形区域的那部分具有使得其Δ值接近于零的折射率。 还公开了形成本发明的纤维的方法。
    • 5. 发明公开
    • MONOLITHIC COAXIAL DEVICE
    • 整体同轴装置
    • EP1108234A1
    • 2001-06-20
    • EP99938705.3
    • 1999-06-25
    • CORNING INCORPORATED
    • BERKEY, George, E.NOLAN, Daniel, A.
    • G02B6/26
    • G02B6/29395G02B6/02052G02B6/03627G02B6/03633G02B6/03638G02B6/03644G02B6/0365G02B6/12007G02B6/14G02B6/29332G02B6/29355H01S2301/04
    • The present invention provides environmentally stable interferometric and lattice devices that exhibit low excess loss and polarization dependent loss. The modal noise at the splices between the device pigtails and the system fiber is minimized or eliminated. The present invention is an optical device (10) for filtering a light signal. The optical device (10) has a tunable spectral response. The optical device includes a first optical fiber (25) having a first core region (30) and a cladding (34) with refractive index n2. The first core region (30) includes a core (32) having refractive index n1 and a first fiber coupling regulator (300) integral with the first optical fiber (25). The first fiber coupling regulator (300) couples the light signal between a first optical path and second optical path and substantially prevents the light signals from coupling into a third optical path.
    • 本发明提供了表现出低过量损失和偏振相关损耗的环境稳定的干涉式和晶格装置。 设备尾纤与系统光纤之间接头处的模态噪声被最小化或消除。 本发明是一种用于过滤光信号的光学装置(10)。 光学装置(10)具有可调谐的光谱响应。 该光学器件包括具有第一芯区(30)和折射率为n2的包层(34)的第一光纤(25)。 第一纤芯区域(30)包括具有折射率n1的纤芯(32)和与第一光纤(25)一体的第一光纤耦合调节器(300)。 第一光纤耦合调节器(300)将光信号耦合在第一光路和第二光路之间并且基本上防止光信号耦合到第三光路中。