公开(公告)号：US07018113B1

公开(公告)日：2006-03-28

申请号：US10718355

申请日：2003-11-18

申请人： Jianhua Wang ,  Qinglin Wang ,  Yanyan Ma ,  Hongtao Hou ,  Alex Chun-Lai Hsu

发明人： Jianhua Wang ,  Qinglin Wang ,  Yanyan Ma ,  Hongtao Hou ,  Alex Chun-Lai Hsu

IPC分类号： G02B6/36

CPC分类号： G02B6/2804 ,  G02B6/0218 ,  G02B6/2856 ,  G02B6/36 ,  G02B6/3887

摘要： In at least some embodiments, an optical module package includes a housing, a plurality of optical fiber cables connected to the housing, and optical fiber connectors terminating each cable. Each optical fiber cable may include an optical fiber, two concentric flexible protective tubes enclosing the fiber, and aramid (e.g. Kevlar®) fibers disposed between the protective tubes. Each protective tube is capable of longitudinally sliding relative to the optical fiber along at least part of the cable, to release stresses resulting from differential thermal expansion of the optical fiber and the protective tubes. Each optical fiber may be held fixed relative to the housing and distal connectors, and one or both of the ends of the protective tubes may be free to move. The protective tubes may also be held fixed relative to the housing, and the optical fiber(s) allowed to move within the housing.

摘要翻译： 在至少一些实施例中，光学模块封装包括外壳，连接到外壳的多条光纤电缆以及端接每条电缆的光纤连接器。 每个光纤电缆可以包括光纤，包围纤维的两个同心的柔性保护管和布置在保护管之间的芳族聚酰胺（例如Kevlar）纤维。 每个保护管能够沿着电缆的至少一部分相对于光纤纵向滑动，以释放由于光纤和保护管的不同热膨胀而产生的应力。 每个光纤可以相对于壳体和远端连接器保持固定，并且保护管的一端或两端可以自由移动。 保护管也可以相对于壳体保持固定，并且允许光纤在壳体内移动。

公开(公告)号：US06678476B1

公开(公告)日：2004-01-13

申请号：US09702359

申请日：2000-10-30

申请人： Hongtao Hou

发明人： Hongtao Hou

IPC分类号： H04J1402

CPC分类号： H04J14/02 ,  H04J14/06

摘要： A wavelength division multiplexing (WDM) apparatus and a WDM method are disclosed. The apparatus generally comprises an optical interleaver coupled to one or more WDM modules. Two or more interleaver modules may be cascaded together to expand the channel handling capacity. Alternatively, two or more WDM modules may be cascaded together to divide the even and odd channels into subsets. The interleaver interleaves a first signal, containing one or more odd channels and one or more even channels with a second signal, containing a portion of the odd channels and a third signal containing a portion of the even channels. A characteristic frequency spacing between adjacent even channels in the second signal and/or a characteristic spacing between adjacent odd channels in the third signal is about two or more times the value of a characteristic frequency spacing of adjacent channels in the first signal.

摘要翻译： 公开了波分复用（WDM）装置和WDM方法。 该装置通常包括耦合到一个或多个WDM模块的光交织器。 两个或多个交织器模块可以级联在一起以扩展信道处理能力。 或者，两个或多个WDM模块可以级联在一起以将偶数和奇数信道划分成子集。 交织器将包含一个或多个奇数信道和一个或多个偶数信道的第一信号与包含奇数信道的一部分的第二信号和包含偶数信道的一部分的第三信号进行交织。 第二信号中相邻偶数信道之间的特征频率间隔和/或第三信号中相邻奇数信道之间的特征间隔大约是第一信号中相邻信道的特征频率间隔的值的两倍或更多倍。

公开(公告)号：US06441961B1

公开(公告)日：2002-08-27

申请号：US09702962

申请日：2000-10-30

申请人： Hongtao Hou ,  Qin Zhang

发明人： Hongtao Hou ,  Qin Zhang

IPC分类号： G02B2728

CPC分类号： G02B6/29302 ,  G02B6/29361 ,  G02B6/29386 ,  G02B6/29395 ,  G02B27/283 ,  H04J14/02 ,  H04J14/06

摘要： An optical interleaver apparatus and method are disclosed. The apparatus comprises a first birefringent element, a first waveplate, a second birefringent element, a polarization rotation device and a retro-reflector. The first birefringent element separates an input optical signal into first and second beams having complementary polarizations. The first waveplate rotates a polarization of light in a first wavelength range, but not a second wavelength range. The second birefringent element splits the first and second beams into third, fourth, fifth and sixth beams. The polarization rotation device and retro-reflector are configured such that, on a reverse path, the second birefringent element combines the third beam with the sixth beam and the fourth beam with the fifth beam. The inventive apparatus may operate as either a demultiplexer or multiplexer. In an alternative embodiment, the apparatus includes a switchable polarization rotator disposed between the first birefringent element and the first waveplate. The switchable polarization rotator allows the apparatus to operate as a router by either rotating or not rotating the polarizations of the first and second beams.

摘要翻译： 公开了一种光交错器装置和方法。 该装置包括第一双折射元件，第一波片，第二双折射元件，偏振旋转装置和后向反射器。 第一双折射元件将输入光信号分离成具有互补极化的第一和第二光束。 第一波片旋转第一波长范围内的光的偏振光，但不是第二波长范围。 第二双折射元件将第一和第二光束分成第三，第四，第五和第六光束。 偏振旋转装置和后向反射器被构造成使得在反向路径上，第二双折射元件将第三光束与第六光束和第四光束与第五光束组合。 本发明的装置可以作为解复用器或多路复用器来操作。 在替代实施例中，该装置包括设置在第一双折射元件和第一波片之间的可切换偏振旋转器。 可切换的偏振旋转器允许设备通过旋转或不旋转第一和第二光束的偏振来作为路由器操作。

公开(公告)号：US06687462B1

公开(公告)日：2004-02-03

申请号：US09534755

申请日：2000-03-24

申请人： Hongtao Hou ,  Qin Zhang

发明人： Hongtao Hou ,  Qin Zhang

IPC分类号： H04J1402

CPC分类号： G02B6/272 ,  G02B6/2766 ,  G02B6/29302 ,  G02B6/29358 ,  H04J14/02 ,  H04J14/06

摘要： A wavelength slicing apparatus and method includes two filters having passbands offset from each other and from a signal channel. The offset passbands enhance transmission where they overlap and reduce transmission where they do not overlap such that transmission of optical signals in a neighboring channel is suppressed. A third filter having a passband centered on the signal channel frequency may be included to enhance optical signal isolation. Wavelength slicing techniques may be used for channel isolation or passband flattening. Wavelength slicing can be incorporated into wavelength division multiplexing (WDM) optical switching to improve optical isolation between channels during routing, multiplexing and demultiplexing operations.

摘要翻译： 一种波长分片装置和方法包括两个滤波器，它们具有彼此偏离的通带和信号通道。 偏移通带在它们重叠的同时增强传输，并且在不重叠的情况下减少传输，从而抑制相邻信道中的光信号的传输。 可以包括具有以信号通道频率为中心的通带的第三滤波器以增强光信号隔离。 波长切片技术可用于通道隔离或通带平坦化。 波分复用可以并入波分复用（WDM）光交换，以改善路由，复用和解复用操作期间信道之间的光隔离。