公开(公告)号：US5943149A

公开(公告)日：1999-08-24

申请号：US25468

申请日：1998-02-18

Applicant: Kevin J. Cearns ,  Calvin Si

Inventor： Kevin J. Cearns ,  Calvin Si

IPC: G02B6/293 ,  H04J14/02 ,  G02B1/10 ,  G02B5/28

CPC classification number: H04J14/02

Abstract: This invention relates to an optical demultiplexor having a narrow band filter for separating a narrow band channel prior to utilizing one or more wide band filters for separating a plurality of channels into groups of channels. The groups of channels can then be further separated or demultiplexed by a plurality of narrow band filters. Advantageously, a plurality of closely spaced (i.e. 50 Ghz) channels can be separated using conventional dichroic filters.

Abstract translation: 本发明涉及一种具有窄带滤波器的光解复用器，该窄带滤波器用于在利用一个或多个用于将多个信道分成多个信道组的宽带滤波器之前分离窄带信道。 然后可以通过多个窄带滤波器进一步分离或解复用信道组。 有利地，可以使用常规二向色滤光片分离多个紧密间隔（即50Ghz）的通道。

公开(公告)号：US5612824A

公开(公告)日：1997-03-18

申请号：US442365

申请日：1995-05-16

Applicant: Y. Calvin Si ,  Gary S. Duck ,  Joseph Ip ,  Neil Teitelbaum

Inventor： Y. Calvin Si ,  Gary S. Duck ,  Joseph Ip ,  Neil Teitelbaum

IPC: G02B5/20 ,  G02B5/28 ,  G02B6/18

CPC classification number: G02B3/0087 ,  G02B27/141 ,  G02B6/02038 ,  G02B6/2937

Abstract: An optical filter is provided having first and second graded index (GRIN) lenses preferably disposed in a coaxial relationship so that they have a common optical axis. Each of the GRIN lenses have an endface providing a port at predetermined location. The ports are disposed on opposite sides of the optical axis and each of the ports are substantially equidistant from the optical axis, so as to be oppositely offset from the optical axis by a same amount. The filter also includes an optical interference filter disposed between other endfaces of the first and second graded index lenses. By changing the location of the ports by a same small amount, the center wavelength of the filter changes by a small amount, thus in manufacture, the filter is tunable. After tuning the filter to a desired wavelength, the locations of the ports are fixed.

Abstract translation: 提供一种滤光器，其具有优选以同轴关系布置的第一和第二渐变折射率（GRIN）透镜，使得它们具有共同的光轴。 每个GRIN透镜都具有在预定位置提供端口的端面。 端口设置在光轴的相对侧上，并且每个端口基本上与光轴等距，从而与光轴相反地偏移相同的量。 滤光器还包括设置在第一和第二渐变折射率透镜的其它端面之间的光学干涉滤光器。 通过改变端口的位置相同的少量，滤波器的中心波长变化很小，因此在制造过程中，滤波器是可调谐的。 在将滤波器调谐到所需波长之后，端口的位置是固定的。

公开(公告)号：US5808763A

公开(公告)日：1998-09-15

申请号：US550730

申请日：1995-10-31

Applicant: Gary Stephen Duck ,  Y. Calvin Si ,  Neil Teitelbaum

Inventor： Gary Stephen Duck ,  Y. Calvin Si ,  Neil Teitelbaum

IPC: G02B6/34 ,  H04J14/02

CPC classification number: G02B6/2938 ,  G02B6/29362 ,  H04J14/02

Abstract: An optical demultiplexor utilizes a single optical interference filter disposed between an input end and an output end of the device. The filter is preferably housed within a cavity in a glass block having an upstanding input end, endwall. The optical filter is a wavelength selective means having a wavelength characteristic dependent upon an angle of incidence. The device has a plurality of reflective surfaces disposed at the input end for reflecting light reflected from the filter, back to the filter at different predetermined angles. Each different predetermined incident angle allows a different predetermined wavelength of light to pass through the filter to an output end being spatially separated from other predetermined wavelengths that pass through the filter. The reflective surfaces are preferably formed in the upstanding endwall of the glass block. Sixteen channels can be separated by this demultiplexor.

Abstract translation: 光解复用器利用设置在设备的输入端和输出端之间的单个光干涉滤光器。 过滤器优选地容纳在具有直立输入端，端壁的玻璃块中的空腔内。 滤光器是具有取决于入射角的波长特性的波长选择装置。 该装置具有设置在输入端的多个反射表面，用于反射从滤光器反射的光，以不同的预定角度返回到滤光器。 每个不同的预定入射角允许不同的预定波长的光通过滤光器到与通过滤光器的其它预定波长空间上分离的输出端。 反射表面优选地形成在玻璃块的直立端壁中。 该解复用器可以分离16个通道。

公开(公告)号：US5539577A

公开(公告)日：1996-07-23

申请号：US442362

申请日：1995-05-16

Applicant: Y. Calvin Si ,  Gary S. Duck ,  Yihao Cheng

Inventor： Y. Calvin Si ,  Gary S. Duck ,  Yihao Cheng

IPC: G02B6/28 ,  G02B6/34 ,  G02B27/14 ,  G02B1/10 ,  G02B6/26 ,  G02B6/32

CPC classification number: G02B6/29358 ,  G02B6/2817 ,  G02B6/2937

Abstract: A device for splitting an optical beam into two beams propagating along different optical paths, is provided. The device includes a pair of graded index collimating lenses having their planar collimating ends aligned such that they are both inwardly facing and share a common optical axis. A partially transmitting partially reflective material is disposed between the lenses. At least one of the planar endfaces of the collimating ends are wedge shaped such that a non-zero angle is formed between the two endfaces. This non-zero angle reduces the effect of unwanted optical interference.

Abstract translation: 提供了一种用于将光束分成沿着不同光路传播的两个光束的装置。 该装置包括一对分级折射准直透镜，其平面准直端对准，使得它们都向内并且共享共同的光轴。 部分透射部分反射材料设置在透镜之间。 准直端的平面端面中的至少一个是楔形的，使得在两个端面之间形成非零角。 该非零角度减少了不需要的光学干涉的影响。

公开(公告)号：US06014484A

公开(公告)日：2000-01-11

申请号：US15325

申请日：1998-01-29

Applicant: Gary S. Duck ,  Yihao Cheng ,  Calvin Si

Inventor： Gary S. Duck ,  Yihao Cheng ,  Calvin Si

IPC: G02B27/28 ,  G02B6/26 ,  G02B6/28 ,  G02B6/32 ,  G02B6/34

CPC classification number: G02B6/2937 ,  G02B6/2746 ,  G02B6/2848 ,  G02B6/29361 ,  G02B6/32 ,  G02B6/272

Abstract: A method and circuit is provided for more efficiently coupling light between two optical waveguides such as optical fibres. When the two waveguides are coupled to spaced apart collimating lenses such as GRIN lenses, the beam propagating between the spaced part lenses may be shifted. In this instance light can more efficiently be coupled out of the output optical fibre if it is angled with respect to the optical axis of the GRIN lens to which it is coupled. This invention provides an output fibre that is non-parallel with the optical axis of the lens it is coupled thereto.

Abstract translation: 提供了一种方法和电路，用于在诸如光纤之类的两个光波导之间更有效地耦合光。 当两个波导耦合到诸如GRIN透镜的间隔开的准直透镜时，在间隔的部分透镜之间传播的光束可能被偏移。 在这种情况下，如果相对于与其耦合的GRIN透镜的光轴成角度，则光可以更有效地耦合到输出光纤外。 本发明提供一种输出光纤，其不与其与其耦合的透镜的光轴平行。