多通道干涉大范围可调谐激光器控制系统（特邀）

多通道干涉大范围可调谐半导体激光器是波分复用系统中的新型关键器件,设计了一套针对此激光器高精度电流注入、温度控制、波长锁定等问题的控制系统。将该激光器的整套控制方案集成单板。在该控制系统下,测试得到激光器输出波长在1 524～1 572 nm中每间隔0.4 nm的120个ITU标准波长光谱图,调谐范围超过48 nm,并且在整个调谐范围内,边模抑制比超过了45 dB,波长偏差与ITU标准波长相差小于±10 pm,线宽小于100 kHz。     

Experimental study of mode characteristics for equilateral triangle semiconductor microcavities

Equilateral triangle semiconductor microcavities with tensile-strained InGaAsP multi-quantum-well as the active region are fabricated by the inductively coupled plasma (ICP) etching technique. The mode characteristics of the fabricated microcavities are investigated by photoluminescence, and enhanced peaks of the photoluminescence spectra corresponding to the fundamental transverse modes are observed for microcavities with side lengths of 5 and 10μm. The mode wavelength spacings measured experimentally coincide very well with those obtained by the theoretical formulae.