公开(公告)号：US20090121392A1

公开(公告)日：2009-05-14

申请号：US12356854

申请日：2009-01-21

Applicant: Dmitrii Stepanov ,  Mark Sceats

Inventor： Dmitrii Stepanov ,  Mark Sceats

IPC: B29C35/08

CPC classification number: G02B6/02152 ,  G02B5/1857 ,  G02B6/02133 ,  G02B6/02138 ,  G02B2006/02157 ,  G03H1/0476 ,  G03H2001/0482 ,  Y10S430/146

Abstract: A method of writing a grating structure with at least one of predetermined amplitude, period and phase properties in a photosensitive waveguide, the method comprising providing at least two light beams which overlap in an overlap region to form an interference pattern; moving the photosensitive waveguide through the overlap region; and modulating the phase of at least one of the light beams relative to the phase of the other light beams using a non-mechanical beam modulator so that the interference pattern appears to move through the overlap region, the apparent movement being variably controlled in response to the movement of the photosensitive waveguide such that a grating structure is written with the at least one of predetermined amplitude, period and phase properties. The apparent movement of the interference pattern may be variably controlled to match the movement of the waveguide, or to be deliberately detuned. The grating structure may be chirped or apodized.

Abstract translation: 一种在感光波导中写入具有预定幅度，周期和相位特性中的至少一个的光栅结构的方法，所述方法包括提供在重叠区域中重叠以形成干涉图案的至少两个光束; 将光敏波导移动通过重叠区域; 并且使用非机械光束调制器调制相对于其他光束的相位的至少一个光束的相位，使得干涉图案看起来移动穿过重叠区域，所述表观移动响应于 光敏波导的运动使得光栅结构以预定的幅度，周期和相位特性中的至少一个被写入。 可以可变地控制干涉图案的明显移动以匹配波导的移动，或者被故意失谐。 光栅结构可以被啁啾或变趾。

公开(公告)号：US07018745B2

公开(公告)日：2006-03-28

申请号：US10338884

申请日：2003-01-09

Applicant: Dmitrii Stepanov ,  Mark Sceats

Inventor： Dmitrii Stepanov ,  Mark Sceats

IPC: G03H1/04 ,  G03C5/56

CPC classification number: G02B6/02152 ,  G02B5/1857 ,  G02B6/02133 ,  G02B6/02138 ,  G02B2006/02157 ,  G03H1/0476 ,  G03H2001/0482 ,  Y10S430/146

Abstract: A method of writing an extended grating structure in a photosensitive waveguide comprising the steps of utilizing at least two overlapping beams of light to form an interference pattern, moving the waveguide through said overlapping beams, simultaneously controlling a relative phase delay between the beams utilising a phase modulator, thereby controlling the positions of maxima within said interference pattern to move at approximately the same velocity as the photosensitive waveguide, wherein the phase modulator does not comprise a mechanical means for effecting the phase modulation, and modifying the relative phase delay between the beams during the writing of the grating structure, whereby a deliberate detuning of the velocity of the positions of maxima within said interference pattern and the velocity of the photosensitive waveguide is utilized to vary a period of the written grating structure in the photosensitive waveguide.

Abstract translation: 一种在光敏波导中写入扩展光栅结构的方法，包括以下步骤：利用至少两个重叠的光束形成干涉图案，使波导移动通过所述重叠光束，同时利用相位来控制光束之间的相对相位延迟 调制器，从而控制所述干涉图案内的最大值的位置以与光敏波导大致相同的速度移动，其中相位调制器不包括用于进行相位调制的机械装置，以及修改光束之间的相对相位延迟 写入光栅结构，由此利用在所述干涉图案内的最大位置的速度和光敏波导的速度的故意失谐来改变光敏波导中的写入光栅结构的周期。

公开(公告)号：US06788713B1

公开(公告)日：2004-09-07

申请号：US09831995

申请日：2001-05-16

Applicant: Dmitrii Stepanov ,  Zourab Brodzeli

Inventor： Dmitrii Stepanov ,  Zourab Brodzeli

IPC: H01S330

CPC classification number: H01S3/0675 ,  G02F1/3523 ,  H01S3/10076 ,  H01S3/1608

Abstract: Output power fluctuations in a distributed feedback laser arrangement are reduced by inducing a saturable absorption grating in a saturable absorption region. Light is coupled into a DFB region and amplified in an amplification region. A feedback loop reflects a portion of the amplified light, and the counter-propagating beams induce an absorption grating in a saturable absorption region which suppresses output oscillations. The amplification region can comprise an erbium doped fiber, and the saturable absorption region can comprise an underpumped portion of such a fiber, or a further length of such fiber, or a planar waveguide.

Abstract translation: 分布式反馈激光器布置中的输出功率波动通过在可饱和吸收区域中引入可饱和吸收光栅来减小。 光耦合到DFB区域并在放大区域中放大。 反馈环路反映了放大的光的一部分，并且反向传播的光束在可饱和吸收区域中诱导抑制输出振荡的吸收光栅。 放大区域可以包括掺铒光纤，并且可饱和吸收区域可以包括这种光纤的下部分部分，或这种光纤的另一长度，或平面波导。

公开(公告)号：US20060147811A1

公开(公告)日：2006-07-06

申请号：US11361987

申请日：2006-02-27

Applicant: Dmitrii Stepanov ,  Mark Sceats

Inventor： Dmitrii Stepanov ,  Mark Sceats

IPC: G03H1/04

CPC classification number: G02B6/02152 ,  G02B5/1857 ,  G02B6/02133 ,  G02B6/02138 ,  G02B2006/02157 ,  G03H1/0476 ,  G03H2001/0482 ,  Y10S430/146

Abstract: A method of writing a grating structure with at least one of predetermined amplitude, period and phase properties in a photosensitive waveguide, the method comprising providing at least two light beams which overlap in an overlap region to form an interference pattern; moving the photosensitive waveguide through the overlap region; and modulating the phase of at least one of the light beams relative to the phase of the other light beams using a non-mechanical beam modulator so that the interference pattern appears to move through the overlap region, the apparent movement being variably controlled in response to the movement of the photosensitive waveguide such that a grating structure is written with the at least one of predetermined amplitude, period and phase properties. The apparent movement of the interference pattern may be variably controlled to match the movement of the waveguide, or to be deliberately detuned. The grating structure may be chirped or apodized.

Abstract translation: 一种在感光波导中写入具有预定幅度，周期和相位特性中的至少一个的光栅结构的方法，所述方法包括提供在重叠区域中重叠以形成干涉图案的至少两个光束; 将光敏波导移动通过重叠区域; 并且使用非机械光束调制器调制相对于其他光束的相位的至少一个光束的相位，使得干涉图案看起来移动穿过重叠区域，所述表观移动响应于 光敏波导的运动使得光栅结构以预定的幅度，周期和相位特性中的至少一个被写入。 可以可变地控制干涉图案的明显移动以匹配波导的移动，或者被故意失谐。 光栅结构可以被啁啾或变趾。

公开(公告)号：US20050047445A1

公开(公告)日：2005-03-03

申请号：US10681372

申请日：2003-10-09

Applicant: Dmitrii Stepanov ,  Ian Mann ,  Francois Ladouceur ,  Nobert Krause

Inventor： Dmitrii Stepanov ,  Ian Mann ,  Francois Ladouceur ,  Nobert Krause

IPC: G06F1/10 ,  H03K5/15 ,  H04J3/06

CPC classification number: G06F1/10 ,  H03K5/15046 ,  H03K5/1508

Abstract: A distribution network for distributing a clock signal comprising a sequence of counter signals, the network comprising a plurality of delivery points for facilitating simultaneous detection of different counter signals to provide timing information, wherein the clock signal comprises a modulated carrier, whereby the sequence of counter signals is in the form of an envelope of the carrier.

Abstract translation: 一种用于分配时钟信号的分配网络，所述时钟信号包括一系列计数器信号，所述网络包括多个递送点，以便于同时检测不同的计数器信号以提供定时信息，其中所述时钟信号包括调制载波，由此所述计数器序列 信号是载体的信封的形式。

公开(公告)号：US20050169599A1

公开(公告)日：2005-08-04

申请号：US10507799

申请日：2003-03-12

Applicant: Dmitrii Stepanov

Inventor： Dmitrii Stepanov

IPC: G02B6/02 ,  G02B6/00

CPC classification number: G02B6/02133 ,  G02B6/02123

Abstract: A method and an apparatus (10) for characterising a multi-layered structure (28) during formation of said multi-layered structure are disclosed. The method includes the steps of measuring the complex reflectivity of the multi-layered structure (28) at a wavelength outside of the bandgap of the multi-layered structure (28) and calculating a complex coupling coefficient from the measured complex reflectivity of the multi-layered structure (28) continuously or at intervals during the formation process. The apparatus (10) includes an interferometer (24) for creating writing beams (20, 22) to form the multi-layered structure (28), such as a Bragg grating, in an optical fibre (16) and an interrogation unit (40) for measuring the complex reflectivity and for calculating the complex coupling coefficient of the multi-layered structure (28) and for producing a feedback sigal which is communicated back to the interfemometer (24). The interrogation unit (40) includes an optical circuit with Mach-Zehnder or Sganac/Michelson interferometer arrangement.

Abstract translation: 公开了一种用于在形成所述多层结构期间表征多层结构（28）的方法和装置（10）。 该方法包括以下步骤：在多层结构（28）的带隙以外的波长处测量多层结构（28）的复反射率，并根据多层结构（28）的测量复反射率计算复合耦合系数， 层状结构（28）在形成过程中连续地或间隔地进行。 该装置（10）包括用于在光纤（16）和询问单元（40）中形成写入光束（20,22）以形成诸如布拉格光栅的多层结构（28）的干涉仪（24） ），用于测量复数反射率并用于计算多层结构（28）的复合耦合系数，并产生反馈信号，该反馈信号被传送回路由器（24）。 询问单元（40）包括具有马赫 - 曾德尔或Sganac /迈克逊干涉仪装置的光学电路。

公开(公告)号：US20050033787A1

公开(公告)日：2005-02-10

申请号：US10647897

申请日：2003-08-25

Applicant: Dmitrii Stepanov ,  Kazimir Kolossovski ,  Alexander Buryak

Inventor： Dmitrii Stepanov ,  Kazimir Kolossovski ,  Alexander Buryak

IPC: G02B6/12 ,  G02B6/34 ,  G06F17/14

CPC classification number: G02B6/02133 ,  G02B2006/02166 ,  G02B2006/12107

Abstract: A method of calculating a sampling function for fabricating a N-channel grating, the method comprising the steps of forming a summation of N periodic seeding functions each describing a refractive index variation, wherein each periodic function includes a phase shift value Φ1(1=1, . . . N) with respect to the other functions, and wherein at least one phase shift value is non-zero. The sampling function may be expressed as: Σ? exp[i (K0Z+θ+(21−N−1)ΔKZ/2+Φ1]=KQ exp[i (K0z+θ+ψ)], where Q=Q(z) is the amplitude and ψ=ψ(z) is the phase of the sampling function, and the summation is performed over 1=1, . . . N. The method may further include the step of determining a set of the phase shift values for which a maximum value of the sampling function amplitude is minimised.

Abstract translation: 一种计算用于制造N沟道光栅的采样函数的方法，所述方法包括以下步骤：形成每个描述折射率变化的N个周期性种子函数的和，其中每个周期函数包括相移值Phi1（1 = 1 ，... N），并且其中至少一个相移值不为零。 采样函数可以表示为：Sigma？ exp [i（K0Z +θ+（21-N-1）Delta KZ / 2 + Phi1] = K Q exp [i（K0z +θ+ psi）]， 其中Q = Q（z）是幅度，psi = psi（z）是采样函数的相位，并且求和在1 = 1，... N上执行。该方法还可以包括确定 采样函数幅度的最大值被最小化的相移值集合。