Optical microwave generation using two parallel DFB lasers integrated with Y-branch waveguide coupler

• 来源期刊: 中国物理（英文版）
• 关键词: optical microwave generation distributed feedback laser Y-branch beat-frequency
• 年，卷（期）: 2007,（5）
• 页码范围: 1459-1463
• 页数: 5页
• 语种: 英文

摘要

A new device of two parallel distributed feedback (DFB) lasers integrated monolithically with Y-branch waveguide coupler was fabricated by means of quantum well intermixing. Optical microwave signal was generated in the Y-branch waveguide coupler through frequency beating of the two laser modes coming from two DFB laser in parallel, which had a small difference in frequency. Continuous rapid tuning of optical microwave signal from 13 to 42 GHz were realized by adjusting independently the driving currents injected into the two DFB lasers.