Dridi Kais, Benhsaien Abdessamad, Zhang Jessica, Hinzer Karin, Hall Trevor J
Opt Express. 2014 Aug 11;22(16):19087-97. doi: 10.1364/OE.22.019087.
We report on the design and characterization of a re-growth free InGaAsP/InP multiple quantum well two-electrode laterally coupled distributed feedback (LC-DFB) lasers. Third-order surface etched gratings have been defined on the ridge sidewalls along the laser cavity by means of stepper lithography. The lasers oscillate in single-mode around 1560 nm with high side mode suppression ratios (>52 dB), a wavelength tuning (≥ 3nm), an output power (≥ 6 mW), and narrow linewidth (<170 kHz) under various current injection ranges at room temperature. A minimum linewidth of 94 kHz has been recorded for 1500 µm-long two-electrode LC-DFB laser while providing non-uniform current injection through the two electrodes. The effect of the width of the inter-electrode gap on these different performance measures is also studied.
我们报道了一种无再生长的InGaAsP/InP多量子阱双电极横向耦合分布反馈（LC-DFB）激光器的设计与特性。通过步进光刻在沿激光腔的脊形侧壁上定义了三阶表面蚀刻光栅。在室温下的各种电流注入范围内，该激光器在1560nm左右以单模振荡，具有高的边模抑制比（>52dB）、波长调谐（≥3nm）、输出功率（≥6mW）和窄线宽（<170kHz）。对于1500μm长的双电极LC-DFB激光器，在通过两个电极提供非均匀电流注入时，记录到的最小线宽为94kHz。还研究了电极间间隙宽度对这些不同性能指标的影响。
