-
1.发明授权
公开(公告)号：US4806442A
公开(公告)日：1989-02-21
申请号：US841801
申请日：1986-03-20
CPC分类号： G03F7/001 , Y10S359/90
摘要： Spatial phase modulating transparent masks comprising two or more portions having two different optical paths and their production processes are disclosed. The transparent masks are particularly useful as an exposure mask in the production of phase-shifted, distributed feedback (DFB) semiconductor lasers for a single-mode operation. A process for the formation of phase-shifted diffraction gratings or corrugations which comprises exposing a substrate, through the above transparent mask, to exposure radiation is also disclosed. According to the present invention, the phase-shifted diffraction gratings can be easily and directly produced with a high accuracy and reliability.
摘要翻译： 公开了包括具有两个不同光路的两个或多个部分及其制造方法的空间相位调制透明掩模。 透明掩模在用于单模操作的相移分布反馈（DFB）半导体激光器的生产中作为曝光掩模特别有用。 还公开了用于形成相移衍射光栅或波纹的方法，其包括通过上述透明掩模将衬底暴露于曝光辐射。 根据本发明，可以以高精度和可靠性容易且直接地生产相移衍射光栅。
-
公开(公告)号：US4637027A
公开(公告)日：1987-01-13
申请号：US654628
申请日：1984-09-26
IPC分类号： H01S3/10 , G01R33/032 , H01S3/106 , H01S5/14
CPC分类号： G01R33/0322 , H01S3/1066 , H01S5/14
摘要： Disclosed is a laser light source device having a laser and an external resonator, wherein as a base, a Faraday rotator is provided at the laser side front of a reflection plane of the resonator so that clockwise and counter-clockwise circular polarizations which have frequencies slightly different to each other are generated, and if a laser such as a semiconductor laser having an eigen-mode having a linear polarization is applied, elements which rotate a polarization by 90 degrees by one emission-and-return through the element, for example, quarter-wave plates, are arranged, The device does not need a strong magnetic field or a strong electric field, and can easily generate lights which are a constant strength. Thus the device can be miniaturized and a high efficiency obtained.
摘要翻译： 公开了一种具有激光器和外部谐振器的激光光源装置，其中作为基座，法拉第转子设置在谐振器的反射面的激光侧前面，使得具有稍微频率的顺时针和逆时针圆偏振 产生彼此不同的元件，并且如果施加具有本征模式具有线性偏振的半导体激光器的激光器，则通过元件的一次发射和返回将偏振旋转90度的元件，例如， 配置四分之一波片，该器件不需要强磁场或强电场，并且可以轻松地产生恒定强度的光。 因此，该装置可以小型化并且获得高效率。
-
公开(公告)号：US06236786B1
公开(公告)日：2001-05-22
申请号：US09263631
申请日：1999-03-05
IPC分类号： G02B626
CPC分类号： G02B6/43 , G02B6/12002 , G02B6/138 , G02B6/42 , G02B6/4214 , H05K1/0274 , H05K1/0346 , H05K2203/1572
摘要： A substrate with an optical waveguide includes a substrate having a through hole and two sides, a first optical waveguide defined in the though hole of the substrate so as to linearly extend between both sides of the substrate, a second optical waveguide defined on at least one of the sides of the substrate, and direction changing means for changing a transmitting direction of a light signal from either one of the first and second optical waveguides to the other. Each optical waveguide includes a core layer for transmitting the light signals and a clad layer formed around the core layer.
摘要翻译： 具有光波导的基板包括具有通孔和两侧的基板，限定在基板的贯通孔中以在基板的两侧之间直线延伸的第一光波导，限定在至少一个 以及用于将来自第一和第二光波导中的任一个的光信号的发送方向改变为另一个的方向改变装置。 每个光波导包括用于传输光信号的芯层和围绕芯层形成的覆层。
-
公开(公告)号：US5080486A
公开(公告)日：1992-01-14
申请号：US581596
申请日：1990-09-12
CPC分类号： G01J3/18 , G02B27/283 , G02B5/3083 , G01J3/0224
摘要： In spectrum measuring equipment the light to be measured is separated by a double-image polarizing element into two polarized wave components whose planes of polarization cross each other perpendicular and which have different optical axes. The two polarized wave components are applied to a dispersing element so that their planes of polarization intersect the direction of light separation at .+-.45.degree. thereto, respectively. The sum of optical powers of the two polarized wave components separated by the dispersing element is measured by a photodetector, so that spectrum measurement independent of the polarization of the light to be measured can be achieved.
-
公开(公告)号：US4730884A
公开(公告)日：1988-03-15
申请号：US890974
申请日：1986-07-29
CPC分类号： G02F1/3137
摘要： An optical switch comprising: an electrode-optic crystal substrate (1, 1'); a central waveguide (21); a pair of input waveguides (22, 23), and a pair of output waveguides (24, 25). A refractive-index-changed region (R') is provided symmetrically within some part of the central waveguide. Switching from the straight-through state to the branching state or vice versa is carried out by introducing a change in the refractive index of the index-changed region.
摘要翻译： 一种光学开关，包括：电极 - 光学晶体衬底（1,1'）; 中心波导（21）; 一对输入波导（22,23）和一对输出波导（24,25）。 在中心波导的某些部分内对称地设置折射率变化区域（R'）。 通过引入折射率变化区域的折射率的变化，从直通状态切换到分支状态或反之亦然。
-
-
-
-
搜索结果
5 条记录 (耗时 0.009 秒)
