公开(公告)号：US07561806B2

公开(公告)日：2009-07-14

申请号：US11394482

申请日：2006-04-01

申请人： Yu Sheng Bai

发明人： Yu Sheng Bai

IPC分类号： H04B10/04

CPC分类号： H04B10/5051 ,  H04B10/50577 ,  H04B10/508

摘要： A method and system is disclosed for making timing alignment for a data transmission system, the method comprising providing a reference clock signal with a first frequency to a multiplexer through a phase shifter, generating a multiplexed signal with a second frequency by the multiplexer, wherein the second frequency follows the first frequency and is higher than the first frequency by a predetermined proportion, sending the multiplexed signal to a modulator, and phase shifting the reference clock signal by the phase shifter before the reference clock signal is provided to the multiplexer, wherein a timing of the multiplexed signal at the second frequency level can be adjusted by adjusting a timing of the reference clock signal at the lower first frequency level.

摘要翻译： 公开了一种用于对数据传输系统进行定时对准的方法和系统，该方法包括通过移相器向多路复用器提供具有第一频率的参考时钟信号，通过多路复用器产生具有第二频率的复用信号，其中， 第二频率遵循第一频率并且比第一频率高预定比例，将多路复用信号发送到调制器，并且在将参考时钟信号提供给多路复用器之前由移相器相移参考时钟信号，其中a 可以通过在较低的第一频率电平调整参考时钟信号的定时来调整在第二频率电平处的复用信号的定时。

公开(公告)号：US07509047B2

公开(公告)日：2009-03-24

申请号：US11071399

申请日：2005-03-02

申请人： Yu Sheng Bai

发明人： Yu Sheng Bai

IPC分类号： H04B17/00

CPC分类号： H04J14/0298 ,  H04B10/0775 ,  H04B2210/078 ,  H04J14/0279 ,  H04J14/0287

摘要： Apparatus and method for transmitting a supervisory signal for optical network applications. The apparatus includes a subcarrier transmission system configured to receive a first supervisory signal and output a second supervisory signal, and an electrical-to-optical conversion system configured to receive the second supervisory signal and a data signal and output an optical signal. The second supervisory signal is associated with a subcarrier frequency. The data signal is associated with a data bandwidth, and the data bandwidth includes a data frequency. At the data frequency, a power density of the data signal is substantially equal to zero. A ratio of the subcarrier frequency to the data frequency ranges from 0.8 to 1, and the subcarrier frequency ranges from 2.4 GHz to 2.483 GHz.

摘要翻译： 用于发送光网络应用的监控信号的装置和方法。 该装置包括被配置为接收第一监控信号并输出​​第二监控信号的副载波传输系统，以及被配置为接收第二监控信号和数据信号并输出​​光信号的电 - 光转换系统。 第二监控信号与副载波频率相关联。 数据信号与数据带宽相关联，数据带宽包括数据频率。 在数据频率下，数据信号的功率密度基本上等于零。 副载波频率与数据频率的比率范围为0.8〜1，副载波频率范围为2.4GHz〜2.483GHz。

公开(公告)号：US20080089697A1

公开(公告)日：2008-04-17

申请号：US11858868

申请日：2007-09-20

申请人： XIAO ANDY SHEN ,  Yu Sheng Bai

发明人： XIAO ANDY SHEN ,  Yu Sheng Bai

IPC分类号： H04B10/04 ,  H01L33/00 ,  H04B10/12

CPC分类号： H04B10/0799 ,  H01L31/153 ,  H04B10/506

摘要： An integrated DWDM transmitter apparatus includes a silica-on-silicon substrate which includes a silica layer and a silicon layer. A plurality of input waveguides and a plurality of gratings are provided within the silica layer. Each of the plurality of gratings is coupled to a corresponding one of the input waveguides. An arrayed waveguide grating within the silica layer is coupled to the plurality of input waveguides, and at least an output waveguide within the silica layer are coupled to the arrayed waveguide grating. The transmitter also includes a plurality of lasers disposed in a recessed region of the silica-on-silicon substrate, and each of the lasers is optically coupled to a corresponding one of the plurality of input waveguides. The integrated transmitter also includes plurality of photodiodes, each of the plurality of photodiodes overlying a corresponding one of the plurality of grating.

摘要翻译： 集成的DWDM发射机装置包括硅二氧化硅衬底，其包括二氧化硅层和硅层。 在二氧化硅层内设置多个输入波导和多个光栅。 多个光栅中的每一个耦合到相应的一个输入波导。 二氧化硅层内的阵列波导光栅耦合到多个输入波导，并且至少二氧化硅层内的输出波导耦合到阵列波导光栅。 发射机还包括设置在硅二氧化硅衬底的凹陷区域中的多个激光器，并且每个激光器光耦合到多个输入波导中对应的一个输入波导。 集成发射机还包括多个光电二极管，多个光电二极管中的每一个覆盖多个光栅中相应的一个光栅。

公开(公告)号：US06856770B2

公开(公告)日：2005-02-15

申请号：US09802222

申请日：2001-03-08

申请人： Yu Sheng Bai

发明人： Yu Sheng Bai

IPC分类号： H04B10/18 ,  H04B10/00

CPC分类号： H04B10/25137

摘要： A system and method for transmitting data modulated spectrally enriched optical pulses with a frequency chirp via an error free propagation region of an optical fiber, in which spectrum of optical pulses gradually depletes from the spectrum that is substantially wider than the spectrum of Fourier-transform limit at an input of the error-free propagation region and becomes comparable to the Fourier-transform limit at an output of this region. The gradual depletion of the spectrum is achieved by utilizing a frequency chirp converter having a dispersion sign opposite to a dispersion sign of the optical fiber.

摘要翻译： 一种用于经由光纤的无错传播区域发送具有频率啁啾的数据经调制的光谱富集的光脉冲的系统和方法，其中光脉冲光谱从基本上比傅里叶变换极限的光谱宽的光谱逐渐消耗 在无差错传播区域的输入处，并且与该区域的输出处的傅里叶变换极限相当。 通过利用具有与光纤的色散符号相反的色散符号的频率啁啾转换器来实现频谱的逐渐消耗。

公开(公告)号：US06735395B1

公开(公告)日：2004-05-11

申请号：US09675731

申请日：2000-09-29

申请人： Yu Sheng Bai

发明人： Yu Sheng Bai

IPC分类号： H04J1402

CPC分类号： H04B10/506 ,  H04B10/504 ,  H04B10/572 ,  H04J14/0221

摘要： A multichannel WDM transmission system incorporates a plurality of WDM optical sources with stabilized wavelengths and light intensity. Efficient stabilization of these characteristics is achieved by modulation of WDM sources by distinguishing low frequency electrical signals in a range between 1 and 4 kHz and modulation depth in a range between 1% and 5% that are used as WDM source identifiers. After the modulated outputs of the WDM sources are multiplexed and filtered, a Fourier transform of total light intensity may be obtained. Digital feedbacks provide stabilization of both the wavelength and light intensity of each WDM optical source.

摘要翻译： 多通道WDM传输系统结合了具有稳定波长和光强度的多个WDM光源。 这些特性的有效稳定是通过将​​1GHz和4kHz之间的范围内的低频电信号与在用作WDM源标识符的1％至5％之间的范围内的调制深度进行区分来实现WDM源的调制来实现的。 在WDM源的调制输出被复用和滤波之后，可以获得总光强度的傅里叶变换。 数字反馈提供每个WDM光源的波长和光强度的稳定性。

公开(公告)号：US5698344A

公开(公告)日：1997-12-16

申请号：US815550

申请日：1997-03-12

申请人： Yu Sheng Bai ,  Ravinder Kachru

发明人： Yu Sheng Bai ,  Ravinder Kachru

IPC分类号： G03H1/02 ,  G03H1/04 ,  G11B7/0065 ,  G11B7/243 ,  G11C13/04

CPC分类号： B82Y10/00 ,  G11B7/0065 ,  G11B7/243 ,  G11C13/044 ,  G11B7/2433

摘要： Ferroelectric materials are disclosed as reversible holographic recording media (25) for use in two-photon recording systems. The ferroelectric materials disclosed herein provide long-lived electronic states intermediate the ferroelectric material's valence and conduction bands. These intermediate states have a sufficiently long life (on the order of 1 to 100 milliseconds) that low-power continuous wave ("cw") lasers (1) can be used to record interference patterns on them. Thus, two-photon holographic recording systems are also disclosed which do not require high-power, short pulse length, mode-locked or Q-switched lasers. Rather, the disclosed holographic recording systems employ visible and near IR cw lasers such as diode lasers. The disclosed two-photon holographic recording systems provide for absorption of a first photon which excites electrons of holographic recording media to an intermediate state. Thereafter, upon absorption of a second photon, the electrons are promoted to the media's conduction band where they are arranged according to the interference pattern provided by the recording system.

摘要翻译： 铁电材料被公开为用于双光子记录系统的可逆全息记录介质（25）。 本文公开的铁电材料提供了在铁电材料的价带和导带之间的长寿命的电子态。 这些中间状态具有足够长的使用寿命（大约1到100毫秒），可以使用低功率连续波（“cw”）激光器（1）来记录干涉图案。 因此，还公开了不需要大功率，短脉冲长度，锁模或Q开关激光器的双光子全息记录系统。 相反，所公开的全息记录系统使用诸如二极管激光器之类的可见光和近红外激光器。 所公开的双光子全息记录系统提供了将全息记录介质的电子激发到中间状态的第一光子的吸收。 此后，在吸收第二光子时，电子被提升到介质的导带，在它们的导带中，它们根据由记录系统提供的干涉图案排列。

公开(公告)号：US5665493A

公开(公告)日：1997-09-09

申请号：US538704

申请日：1995-10-03

申请人： Yu Sheng Bai ,  Ravinder Kachru ,  Lambertus Hesselink ,  Roger M. Macfarlane

发明人： Yu Sheng Bai ,  Ravinder Kachru ,  Lambertus Hesselink ,  Roger M. Macfarlane

IPC分类号： G11C11/42 ,  G03H1/02 ,  G03H1/04 ,  G11B7/00 ,  G11B7/0055 ,  G11B7/0065 ,  G11B7/243 ,  G11C13/04

CPC分类号： B82Y10/00 ,  G11B7/0065 ,  G11B7/243 ,  G11C13/042 ,  G11B7/2433

摘要： Rare earth doped ferroelectric materials are disclosed as reversible holographic recording medium (25) for use in two-photon recording systems. Such rare earth elements provide long-lived electronic states intermediate the ferroelectric material's valence and conduction bands. In some cases, these rare earth intermediate states have a sufficiently long life that low-power continuous wave ("cw") lasers (1) can be used to record interference patterns on them. Thus, two-photon holographic recording systems are also disclosed which do not require high-power, short pulse length, mode-locked or Q-switched lasers. Rather, the disclosed holographic recording systems employ cw lasers such as diode lasers. The rare earth dopants include praseodymium, neodymium, dysprosium, holmium, erbium, and thulium. These dopants provide ions having 4f excited states that give rise to absorptions in the near infra-red and visible spectral regions and typically have lifetimes on the order of 0.1 to 1 milliseconds.The disclosed two-photon holographic recording systems provide for absoption of a first photon which excites electrons of a holographic recording medium to a rare-earth intermediate state. Thereafter, upon absorption of a second photon, the electrons are promoted to the medium's conduction band where they are arranged according to the interference pattern provided by the recording system.

摘要翻译： 稀土掺杂的铁电材料被公开为用于双光子记录系统的可逆全息记录介质（25）。 这种稀土元素在铁电材料的价带和导带之间提供长寿命的电子态。 在某些情况下，这些稀土中间体具有足够长的寿命，可以使用低功率连续波（“cw”）激光器（1）来记录干涉图案。 因此，还公开了不需要大功率，短脉冲长度，锁模或Q开关激光器的双光子全息记录系统。 相反，所公开的全息记录系统采用诸如二极管激光器之类的cw激光器。 稀土掺杂剂包括镨，钕，镝，钬，铒和。。 这些掺杂剂提供具有4f激发态的离子，其在近红外和可见光谱区域中产生吸收，并且通常具有0.1至1毫秒量级的寿命。 所公开的双光子全息记录系统提供了将全息记录介质的电子激发到稀土中间状态的第一光子的吸收。 此后，在吸收第二光子时，电子被提升到介质的导带，它们根据由记录系统提供的干涉图案排列。