提出了一种无波长校正的光纤布拉格光栅（FBG）传感系统，可在未对基于重构等效啁啾（REC）技术制造的扫频DFB激光器进行波长线性校正的情况下，识别波长变化，并解调出光栅传感器的温度变化。所提无波长校正FBG传感系统可以在200 ℃范围内进行精确的温度检测，测得的波长与温度的线性系数1－R²仅为0.004 4。该传感系统光源在1 kHz的锯齿波调制下，调谐范围可达2.5 nm，且测量过程中无需额外波长校正器件。

Modulation bandwidth enhancement in a directly modulated two-section distributed feedback (TS-DFB) laser based on a detuned loading effect is investigated and experimentally demonstrated. The results show that the 3-dB bandwidth of the TS-DFB laser is increased to 17.6 GHz and that chirp parameter can be reduced to 2.24. Compared to the absence of a detuned loading effect, there is a 4.6 GHz increase and a 2.45 reduction, respectively. After transmitting a 10 Gb/s non-return-to-zero (NRZ) signal through a 5-km fiber, the modulation eye diagram still achieves a large opening. Eight-channel laser arrays with precise wavelength spacing are fabricated. Each TS-DFB laser in the array has side mode suppression ratios (SMSR) > 49.093 dB and the maximum wavelength residual < 0.316 nm.

基于锑化物的带间级联激光器同时具有带间跃迁的高增益和级联结构的高量子效率，是中红外波段重要的相干光源，其功耗低于其它中红外半导体激光器，因而单模带间级联激光器在基于激光吸收光谱技术的高分辨气体检测和化学传感等领域具有很大的优势。目前利用Bragg光栅实现波长选择的单模分布反馈带间级联激光器已经实现商品化，但是，与同样有源区结构的Fabry-Pérot腔带间级联激光器最高600 mW的出光功率相比，单模功率最高55 mW，损耗较大。对几种不同结构的分布反馈带间级联激光器的性能进行对比分析，探讨这类单模中红外激光器损耗的主要来源以及改进思路。此外，介绍了垂直腔面发射和光子晶体带间级联激光器的进展，并与分布反馈带间级联激光器的性能进行比较，讨论其优缺点及适用的场景。

直接调制半导体激光器因其具有高速传输、高可靠和低成本等特点，成为应用在第五代移动通信技术（5G）前传和数据中心中的高性价比光源。高速直接调制半导体激光器性能提升已有许多研究，文章分别从无制冷宽温工作高速半导体激光器研究方面和超高速半导体激光器方面对高速直接调制半导体激光器的基本理论和发展历程进行了综述，分析各自的优缺点，并介绍了研发团队在这些方面取得的部分进展。

Wavelength-tunable organic semiconductor lasers based on mechanically stretchable polydimethylsiloxane (PDMS) gratings were developed. The intrinsic stretchability of PDMS was explored to modulate the period of the distributed feedback gratings for fine tuning the lasing wavelength. Notably, elastic lasers based on three typical light-emitting molecules show comparable lasing threshold values analogous to rigid devices and a continuous wavelength tunability of about 10 nm by mechanical stretching. In addition, the stretchability provides a simple solution for dynamically tuning the lasing wavelength in a spectral range that is challenging to achieve for inorganic counterparts. Our work has provided a simple and efficient method of fabricating tunable organic lasers that depend on stretchable distributed feedback gratings, demonstrating a significant step in the advancement of flexible organic optoelectronic devices.Wavelength-tunable organic semiconductor lasers based on mechanically stretchable polydimethylsiloxane (PDMS) gratings were developed. The intrinsic stretchability of PDMS was explored to modulate the period of the distributed feedback gratings for fine tuning the lasing wavelength. Notably, elastic lasers based on three typical light-emitting molecules show comparable lasing threshold values analogous to rigid devices and a continuous wavelength tunability of about 10 nm by mechanical stretching. In addition, the stretchability provides a simple solution for dynamically tuning the lasing wavelength in a spectral range that is challenging to achieve for inorganic counterparts. Our work has provided a simple and efficient method of fabricating tunable organic lasers that depend on stretchable distributed feedback gratings, demonstrating a significant step in the advancement of flexible organic optoelectronic devices.