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1. 发明授权

US06888994B2 Optical device 有权
标题翻译：光学装置
公开(公告)号：US06888994B2
公开(公告)日：2005-05-03
申请号：US10240928
申请日：2001-04-06
申请人： Jeremy J. Baumberg , Martin D. B. Charlton , Maria C. Netti , Gregory J. Parker , Majd E. Zoorob
发明人： Jeremy J. Baumberg , Martin D. B. Charlton , Maria C. Netti , Gregory J. Parker , Majd E. Zoorob
IPC分类号： G02B6/12 , C30B33/00 , G02B1/02 , G02B6/122 , G02F1/31 , G02F1/35 , G02B6/10
CPC分类号： B82Y20/00 , C30B29/60 , C30B33/00 , G02B6/1225
摘要： In order to create an optical device with a photonic band gap extending in two dimensions and with very uniform properties in any direction and for any polarisation state, to within 1%, air holes are etched within a substrate of low refractive index material such silicon oxynitride or silica glass. The ratio of air hole area to the remainder of the substrate is low, being less than 35%. The air holes define a quasicrystal structure, having twelve fold symmetry, being based on a square-triangle system. In another development, an etched substrate with a regular crystal structure or quasicrystal structure exhibits a non-linear refractive index. Two adjacent areas in such a substrate have different lattice properties, or have defects in the lattices, to create a unidirectional transmission path (diode action). A further beam of light may be used to modulate the transmission path by reason of the non-linear refractive index.
摘要翻译：为了创建具有在二维上延伸的光子带隙并且在任何方向和任何极化状态具有非常均匀性质的光子带隙的光学器件，在1％以内，在低折射率材料的衬底内蚀刻气孔，例如氮氧化硅或二氧化硅玻璃。空气孔面积与基板剩余部分的比例低，小于35％。空气孔限定了基于正方形三角系统的十二对称的准晶体结构。在另一个发展中，具有规则晶体结构或准晶体结构的蚀刻衬底表现出非线性折射率。这种衬底中的两个相邻区域具有不同的晶格特性，或者在晶格中具有缺陷，以产生单向传输路径（二极管动作）。由于非线性折射率，可以使用另外的光束来调制传输路径。

2. 发明授权

US06735368B2 Optical delay device 有权
标题翻译：光延时器
公开(公告)号：US06735368B2
公开(公告)日：2004-05-11
申请号：US10438316
申请日：2003-05-15
申请人： Gregory J. Parker , Martin D. B. Charlton , Majd Zoorob
发明人： Gregory J. Parker , Martin D. B. Charlton , Majd Zoorob
IPC分类号： G02B612
CPC分类号： G02B6/29394 , B82Y20/00 , G01N21/774 , G02B6/12014 , G02B6/1225 , G02B6/2813 , G02B6/2861 , G02B2006/12164 , G02F1/365 , H01S3/063 , H01S3/0635
摘要： An optical system includes a delay region having a photonic band structure, a modulated optical signal source, an optical input, and an optical output. The optical input couples modulated input optical signals into a predetermined mode in the delay region such that group velocity of the optical signal is reduced. The optical output includes a wavelength selective element. Input optical signals are coupled into a highly dispersive mode in the delay region in which the group velocity of the optical signal is reduced. The input signal, which has been delayed and dispersed, is recovered at the output of the device using the wavelength selective element.
摘要翻译：光学系统包括具有光子带结构的延迟区域，调制光信号源，光输入和光输出。光输入将调制的输入光信号耦合到延迟区域中的预定模式，使得光信号的组速度降低。光输出包括波长选择元件。输入光信号在光信号的群速度降低的延迟区域中被耦合成高色散模式。已经被延迟和分散的输入信号在使用波长选择元件的器件的输出处被恢复。

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