公开(公告)号：US20040008965A1

公开(公告)日：2004-01-15

申请号：US10190592

申请日：2002-07-09

Applicant: NORTEL NETWORKS LIMITED

Inventor： Ian B. Betty

IPC: G02B006/00

CPC classification number: G02F1/2257 ,  G02F2001/212 ,  G02F2001/217 ,  G02F2201/16 ,  G02F2203/48

Abstract: A current tuned optical attenuator includes a Mach-Zehnder interferometer that relies on the creation of free carriers to create a phase difference in an optical signals along two waveguide arms.

Abstract translation: 目前调谐的光衰减器包括马赫 - 曾德干涉仪，该干涉仪依赖于自由载波的产生，以沿着两个波导臂在光信号中产生相位差。

公开(公告)号：US20030152324A1

公开(公告)日：2003-08-14

申请号：US10073101

申请日：2002-02-12

Applicant: NORTEL NETWORKS LIMITED

Inventor： Ian B. Betty ,  Maxime Poirier

IPC: G02B006/26 ,  G02B006/12

CPC classification number: G02B6/14 ,  G02B6/12004 ,  G02B6/2813 ,  G02B2006/1215

Abstract: Through the introduction of an imaging multimode interference device in an integrated optical circuit, such performance degradations as lateral waveguide field oscillations and backreflections may be suppressed. The suppression of lateral waveguide field oscillations (that may occur due to misaligned optical coupling), in particular, can significantly reduce variations in the power splitting ratio of an optical power splitting structure, such as those employed by a Mach-Zehnder modulator.

Abstract translation: 通过在集成光电路中引入成像多模干扰装置，可以抑制诸如横向波导场振荡和反向反射的性能劣化。 特别是抑制横向波导场振荡（可能由于不对准的光耦合而发生）可以显着地减少诸如由马赫 - 曾德尔调制器采用的光功率分离结构的功率分配比的变化。