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1. 发明授权

US06628864B2 Optical code generation and detection 有权
标题翻译：光学代码生成和检测
公开(公告)号：US06628864B2
公开(公告)日：2003-09-30
申请号：US09803367
申请日：2001-03-08
申请人： David John Richardson , Periklis Petropoulis , Morten Ibsen , Peh Chiong Teh
发明人： David John Richardson , Periklis Petropoulis , Morten Ibsen , Peh Chiong Teh
IPC分类号： G02B634
CPC分类号： H04J14/005 , G02B6/02085 , G02B6/02152 , G02F1/3519
摘要： Optical code division multiple access (OCDMA) coder:decoder gratings have been fabricated. The modulated refractive index profile that makes up the OCDMA coder:decoder grating incorporates changes in polarity between OCDMA chips by discrete phase shifts, thereby to provide bipolar coding through phase modulation. (In another embodiment quadrupolar coding is achieved). For NRZ modulation, each grating section is either in phase with, or has a predetermined phase shift relative to, the preceding grating section, depending on whether the OCDMA signature has a change in polarity between chips. RZ modulation is also possible. Results are presented from specific examples of bipolar OCDMA with NRZ modulation, which show higher data rates (10 Gbit/s), shorter chip-lengths (6.4 ps) and far longer code sequences (63 bits) than previously demonstrated. Other embodiments relate to optical packet switching, for example using the Internet Protocol (IP) or Asynchronous Transfer Mode (ATM).
摘要翻译：光码分多址（OCDMA）编码器：解码器光栅已经被制造出来。组成OCDMA编码器的调制折射率分布：解码器光栅通过离散相移包含OCDMA芯片之间极性的变化，从而通过相位调制提供双极性编码。（在另一实施例中，实现了四极编码）。对于NRZ调制，取决于OCDMA签名是否具有芯片之间的极性变化，每个光栅部分与之前的光栅部分同相或具有预定的相移。 RZ调制也是可能的。结果由具有NRZ调制的双极性OCDMA的具体示例提供，其显示比以前演示的更高的数据速率（10Gbit / s），较短的码片长度（6.4ps）和更长的码序列（63位）。其他实施例涉及光分组交换，例如使用因特网协议（IP）或异步传输模式（ATM）。

2. 发明授权

US07136559B2 Optical fibre-based devices utilising the Raman effect 有权
标题翻译：利用拉曼效应的基于光纤的装置
公开(公告)号：US07136559B2
公开(公告)日：2006-11-14
申请号：US10490907
申请日：2002-09-27
申请人： Zulfadzli Yusoff , Walter Belardi , Peh Chiong Teh , Ju Han Lee , Tanya Mary Monro , David John Richardson
发明人： Zulfadzli Yusoff , Walter Belardi , Peh Chiong Teh , Ju Han Lee , Tanya Mary Monro , David John Richardson
IPC分类号： G02B6/032
CPC分类号： G02F1/365 , G02F2202/32
摘要： An optical fibre device based on the Raman effect comprises a first optical source to provide light at a first wavelength, and a holey optical fibre which receives the light from the first optical source such that optical gain or loss is provided at a second wavelength by the effect of Raman scattering within the fibre. For optical gain, the second wavelength is longer than the first wavelength, and the device can be operated as an amplifier, or as a laser if optical feedback is provided. For optical loss, the second wavelength is shorter than the first, and the device may be used as an optical modulator. The fibre may be fabricated from pure silica, although other undoped or doped materials may alternatively be used to tailor properties of the fibre such as gain spectrum, bandwidth, power handling capability and mode propagation.
摘要翻译：基于拉曼效应的光纤装置包括提供第一波长的光的第一光源和接收来自第一光源的光的多孔光纤，使得在第二波长处提供光增益或损耗，纤维内拉曼散射的作用。对于光学增益，第二波长比第一波长长，并且器件可以作为放大器工作，或者如果提供光学反馈则作为激光器。对于光损耗，第二波长比第一波长短，该器件可以用作光调制器。纤维可以由纯二氧化硅制成，尽管其它未掺杂或掺杂的材料可以替代地用于定制纤维的性质，例如增益谱，带宽，功率处理能力和模式传播。

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