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    • 81. 发明授权
    • Unidirectional optical power monitor
    • 单向光功率监视器
    • US07255497B2
    • 2007-08-14
    • US10572792
    • 2005-05-24
    • Masaru SuzukiTakeshi SatohNobuhiro Ueno
    • Masaru SuzukiTakeshi SatohNobuhiro Ueno
    • G02B6/255G02B6/42G02B6/32G02B6/36
    • G02B6/4204G02B6/2817G02B6/4292
    • A small-sized uni-directional optical power monitor with an excellent directional characteristic is disclosed. The monitor comprises: a GRIN lens having a tap film for transmitting and reflecting an optical signal from an input and an output optical fiber with a predetermined ratio; and a photodiode having a lens for detecting and measuring part of the optical signal that has transmitted through the tap film. The tap film of the GRIN lens is connected to the photodiode by an opaque black sleeve having two continuous circular holes serving as an internal optical path between them. The two circular holes are parallel to each other, their center axes are shifted from each other, and the two circular holes communicate each other through a through-hole at the sleeve intermediate position. The portion of the optical signal coming from one of the optical fibers and transmitting through the tap film passes through the two circular holes and the through-hole and is detected by the photodiode. Since one of the circular holes has a vertical wall at the sleeve intermediate position, an optical signal coming from the other optical fiber and transmitting through the tap film is obstructed by the wall and is not measured by the photodiode.
    • 公开了一种具有优异方向特性的小尺寸单向光功率监视器。 监视器包括:具有用于从预定比例的输入和输出光纤传输和反射光信号的抽头膜的GRIN透镜; 以及具有透镜的光电二极管,用于检测并测量透过分接膜的光信号的一部分。 GRIN透镜的分接膜通过不透明的黑色套筒连接到光电二极管,该两个连续的圆形孔作为它们之间的内部光路。 两个圆形孔彼此平行,它们的中心轴彼此偏移,并且两个圆形孔通过套筒中间位置处的通孔彼此连通。 来自光纤之一并透过分接膜的光信号的部分通过两个圆形孔和通孔,由光电二极管检测。 由于一个圆形孔在套筒中间位置具有垂直壁,所以来自另一光纤并通过分接膜传输的光信号被壁阻挡,并且不被光电二极管测量。
    • 82. 发明申请
    • UNIDIRECTIONAL OPTICAL POWER MONITOR
    • 单向光功率监测器
    • US20070183716A1
    • 2007-08-09
    • US11624105
    • 2007-01-17
    • Masaru SuzukiMasahiro Ao
    • Masaru SuzukiMasahiro Ao
    • G02B6/32
    • G02B6/4201G02B6/262G02B6/2817G02B6/327G02B6/4206G02B6/4286
    • A small high-performance unidirectional optical power monitor having a directional characteristic of 30 dB or higher is provided. A sleeve in which the center axes of round holes in which a GRIN lens and a photo-diode are inserted and fitted are eccentric from each other is used. The entire sleeve or the inner surfaces are formed by a black non-light-transmissive material. The position of the intermediate wall in the sleeve is at a distance of 0.55 L to 0.8 L from a tap film of the GRIN lens. L is the distance between the tap film and the lens extreme end of the photo-diode. Preferably, the angle of the intermediate wall is in the range from 45 to 135 degrees, the light reflectivity of the wall surfaces of the intermediate wall and the inner wails is 10% or less, the surface roughness is 2 nm or higher, and the undulation is ½ or less of the wavelength of light used.
    • 提供具有30dB或更高的方向特性的小型高性能单向光功率监视器。 使用其中插入和装配GRIN透镜和光电二极管的圆孔的中心轴线彼此偏心的套筒。 整个套筒或内表面由黑色非透光材料形成。 中间壁在套筒中的位置距离GRIN透镜的分接膜为0.55L至0.8L的距离。 L是分接膜与光电二极管的透镜最终端之间的距离。 优选地,中间壁的角度在45〜135度的范围内,中间壁和内部壁的壁面的光反射率为10%以下,表面粗糙度为2nm以上, 波动是所使用的光的波长的1/2或更少。