公开(公告)号：US06873750B2

公开(公告)日：2005-03-29

申请号：US10389697

申请日：2003-03-12

Applicant: Sean V. Hum ,  Robert J. Davies ,  Michal Okoniewski

Inventor： Sean V. Hum ,  Robert J. Davies ,  Michal Okoniewski

IPC: G02F1/035 ,  G02F1/225

CPC classification number: G02F1/0356 ,  G02F2201/127

Abstract: An electro-optic modulator structure for particular use in narrowband optical subcarrier systems. A traveling wave is established across the active region of the device, instead of a standing wave. This is accomplished through the use of a directional resonator structure that prevents reverse-traveling waves from being established within the resonator. Hence, the electric field is applied to the traveling optical wave in a similar fashion to a traveling-wave modulator, except that the traveling wave has a much greater amplitude due to the build-up of energy inside the resonator. Since the modulator is operated in a traveling-wave fashion, it can be tuned to operate at any frequency using tuning elements, regardless of the length of the active region. Furthermore, the microwave and optical signals can be velocity-matched to mitigate optical transit time effects that are normally associated with a resonant modulator utilizing a standing-wave electrode structure.

Abstract translation: 一种特别用于窄带光子载波系统的电光调制器结构。 在设备的有源区域之间建立行波，而不是驻波。 这是通过使用防止在谐振器内建立反向行波的定向谐振器结构来实现的。 因此，与行波调制器相似的方式将电场施加到行进光波，除了由于谐振器内的能量的积聚而使行波具有大得多的振幅。 由于调制器以行波方式操作，所以可以使用调谐元件将其调谐到任何频率，而与有源区的长度无关。 此外，微波和光信号可以被速度匹配以减轻通常与利用驻波电极结构的谐振调制器相关联的光通过时间效应。