Mechanism of a Variable Optical Attenuator Based on Guided Wave Resonance

• 来源期刊: 中国物理快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2001,（9）
• 所属期刊栏目: CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SC
• 页码范围: 1288-1290
• 页数: 3页
• 分类号: O4
• 语种: 英文

摘要

The mechanism of an electrically controlled variable optical attenuator is investigated based on the varying energy coupling efficiency of a light beam into a guided wave resonance. Compared to the conventional attenuated totalinternal reflection devices based on the surface plasmon resonance, the driving voltage for this attenuator is greatly reduced because of the newly chosen working interior angle. This letter explains the principle of attenuator operation and presents experimental results obtained on a realization of the device.