公开(公告)号：US5576883A

公开(公告)日：1996-11-19

申请号：US372150

申请日：1995-01-13

申请人： Paul R. Morkel ,  Stephen R. Desbruslais ,  Nigel H. Taylor

发明人： Paul R. Morkel ,  Stephen R. Desbruslais ,  Nigel H. Taylor

IPC分类号： G02B6/02 ,  G02B6/10 ,  G02B6/28 ,  G02B6/34 ,  G02B5/30

CPC分类号： G02B6/2773 ,  G02B6/02 ,  G02B6/105 ,  G02B6/2733 ,  G02B6/274 ,  G02B6/2843 ,  G02B6/2861 ,  G02B6/4215

摘要： A spectral polarization separator (SPS) designed to separate two wavelength-separated signals applied to the SPS with the same state of polarisation (SOP) into signals with orthogonal SOP's comprises two or more birefringent fibre elements optically in series. The differential delays and relative orientations of these elements are chosen so that polarisation separation is effected without introducing any polarisation mode dispersion (PMD). This contrasts with a prior art single birefringent element SPS whose operation necessarily does introduce PMD. A particular application for the SPS is in a dual wavelength transmitter designed for overcoming polarization hole-burning effects in a long-haul optically amplified transmission system.

摘要翻译： 设计用于将以相同偏振状态（SOP）施加到SPS的两个波长分离信号分离为具有正交SOP的信号的光谱偏振分离器（SPS）包括两个或更多个双折射光纤元件。 选择这些元件的差分延迟和相对取向，使得在不引入任何偏振模色散（PMD）的情况下实现极化分离。 这与现有技术的单一双折射元件SPS不同，其操作必然会引入PMD。 SPS的特定应用是设计用于克服长距离光放大传输系统中的极化孔燃烧效应的双波长发射器。

公开(公告)号：US06785456B2

公开(公告)日：2004-08-31

申请号：US10390301

申请日：2003-03-17

申请人： Scott R. Bickham ,  William D. Cornwell ,  Nigel H. Taylor ,  Thomas J. Atwood

发明人： Scott R. Bickham ,  William D. Cornwell ,  Nigel H. Taylor ,  Thomas J. Atwood

IPC分类号： G02B616

CPC分类号： G02B6/02014 ,  G02B6/02271 ,  G02B6/0228 ,  G02B6/29377 ,  H04B10/25253

摘要： Optical fibers of different physical characteristics are combined to produce a hybrid fiber which, at the operating wavelength, has a relatively large effective area and desirable net dispersion and attenuation characteristics over the combined length of the hybrid system. Hybrid fibers are constructed in accordance with the principles of the invention by optically connecting a first fiber having a large effective area (greater than 85 &mgr;m2), an attenuation less than 0.19 dB/km and a dispersion greater than 10 ps/nm/km at 1550 nm, to a second fiber having an effective area which is smaller than the first fiber, a dispersion which is less than 10 ps/nm/km, and an attenuation which is less than 0.23 dB/km at 1550 nm. Both the first and second fibers preferably have a positive dispersion slope at 1550 nm. The first and second fibers are preferably spliced directly together.

摘要翻译： 不同物理特性的光纤被组合以产生混合光纤，其在工作波长处具有比混合系统的组合长度具有相对较大的有效面积和期望的净色散和衰减特性。 混合光纤根据本发明的原理通过光学连接具有大的有效面积（大于85mum 2）的衰减小于0.19dB / km和大于10ps / nm的色散的第一光纤构成 / km在1550nm处的第二光纤，具有小于第一光纤的有效面积的第二光纤，小于10ps / nm / km的色散和在1550nm小于0.23dB / km的衰减。 第一和第二纤维优选在1550nm处具有正色散斜率。 第一和第二纤维优选直接拼接在一起。