16-wavelength gain-coupled DFB laser array with fine tunability

作者：G.P. Li, T. Makino, Andrew Sarangan, Wei‐Ping Huang · 发表于：IEEE Photonics Technology Letters · 年份：1996 · DOI：10.1109/68.475765 · 被引用次数：56 · 研究领域：Photonic and Optical Devices、Semiconductor Lasers and Optical Devices、Semiconductor Quantum Structures and Devices

16-wavelength semiconductor laser array with fine wavelength tunability is demonstrated, utilizing gain-coupled distributed feedback (DFB) lasers with different ridge waveguide widths. Besides the coarse tuning by the ridge widths, the fine post-fabrication tunability for individual lasers in the array is achieved with a Ti thin-film resistor integrated on the chip. Due to the gain-coupling effect, 16 single-mode lasing wavelengths around 1.55 μm in /spl sim/1 nm spacing are obtained simultaneously. An effective fine-tuning up to 1 nm is observed at a moderate heating power of 100 mW.