A Temporal Coherence Study of Quantum-Dot/Dash Broadband Lasers and Superluminescent Diodes

作者：Dimas Clara E^*; Tan Chee Loon; Djie Hery Susanto; McAulay Alastair D; Ooi Boon Siew

来源：IEEE Photonics Technology Letters, 2009, 21(9-12): 694-696.

DOI：10.1109/LPT.2009.2016575

• Quantum-dash (Qdash)
• quantum-dot (QD)
• semiconductor laser
• superluminescent diode (SLD)
• temporal coherence

The temporal coherence functions of InGaAs-GaAs quantum-dot (QD) and InAs-InGaAlAs quantum-dash (Qdash) superluminescent diodes (SLDs) and broadband laser diodes (BLDs) are reported. Using an optical fiber-based spectral interferometer, the fabricated devices were shown to yield low coherence lengths of 4.00-12.29 mu m and 33.48-74.56 mu m for SLD and BLD devices, respectively. In addition, there were negligible secondary coherencies indicating that these devices have the potential for use in low coherent interferometric systems.

• 出版日期2009-6