公开(公告)号：US20030098982A1

公开(公告)日：2003-05-29

申请号：US09993550

申请日：2001-11-28

Applicant: JDS Uniphase Corporation

Inventor： Robert R. McLeod ,  Gang Lei ,  Long Yang ,  Kuochou Tai

IPC: G01B009/02

CPC classification number: G02B6/29346 ,  G01J3/26 ,  G01J3/4532 ,  G01J9/02 ,  G01J2009/028 ,  G02B6/32 ,  G02B26/001 ,  H04J14/02

Abstract: A truncated series-based cavity interferometer contains a multi-reflection cavity upon which an input light beam is directed at an acute angle, to produce a spatially spread series of multiple order beams through which the transfer function (e.g., a generally square pass/stop profile) of the interferometer is defined. Because the input beam is incident upon the cavity at an acute angle, it is non counter-propagating with respect to the reflected beam, so that no circulator is required for beam separation. The intensity profile of the energy contained in the composite set of spatially separated multiple order beams comprises a spatially separated decaying series of reflections, that are intercepted by independently positionable spatial filter elements.

Abstract translation: 截断的基于系列的空腔干涉仪包含多反射腔，输入光束在该多反射空腔上以锐角指向，以产生空间上扩展的多阶光束系列，通过该光束传递函数（例如，大致平方通过/停止 定义了干涉仪的轮廓。 因为输入光束以锐角入射到空腔上，所以它不会相对于反射光束反向传播，因此光束分离不需要循环器。 包含在空间分离的多阶光束的复合组中的能量的强度分布包括由独立可定位的空间滤光元件截取的空间分离的衰减系列的反射。

公开(公告)号：US20020176659A1

公开(公告)日：2002-11-28

申请号：US10042798

申请日：2002-01-09

Applicant: JDS Uniphase Corporation

Inventor： Gang Lei ,  Yuan Shi ,  Paul Colbourne

IPC: G02B006/28

CPC classification number: G02B6/29358 ,  G02B6/29394 ,  G02B6/29395 ,  G02F1/21 ,  H04B10/25133

Abstract: A tunable etalon for use in a dispersion compensator according to the present invention includes a Gires-Tournois (GT) etalon with a variably reflective front mirror section and a fixed back mirror section defining a resonance cavity therebetween. The front mirror section includes one or more tunable gaps formed between pairs of partially reflective mirrors and filled with a material with a variable index of refraction, e.g. liquid crystal. Due to the variability of the material's refractive index, the reflectivity of the tunable cavity can be adjusted by inducing an electric field using a controllable voltage source. With such a variable reflectivity, the time (group) delay among frequency components of input light can be adjusted and varied within a range of a few milliseconds or less, such that chromatic dispersion can be tuned dynamically. A pair of such etalons, which have equal and opposite dispersion curves, can achieve a wide flat range of dispersion. A plurality of etalons, connected in series, can achieve a greater range of tunable dispersion. A similar dispersion compensator can be formed using a ring resonator with a variable coupler.

Abstract translation: 用于根据本发明的色散补偿器的可调标准具包括具有可变反射前镜部分的Gires-Tournois（GT）标准具和在它们之间限定谐振腔的固定后视镜部分。 前镜部分包括在对成对的部分反射镜之间形成的一个或多个可调节间隙，并且填充有可变折射率的材料，例如， 液晶。 由于材料的折射率的变化，可以通过使用可控电压源诱导电场来调节可调谐腔的反射率。 通过这样的可变反射率，输入光的频率分量之间的时间（组）延迟可以在几毫秒以下的范围内进行调整和变化，使得可以动态地调节色散。 具有相等和相对色散曲线的一对这样的标准具可以实现宽的平坦的分散范围。 串联连接的多个标准具可实现更大范围的可调散射。 可以使用具有可变耦合器的环形谐振器来形成类似的色散补偿器。