伯克利加州大学的研究人员用一种产生自协调波长的方法（在晶片之间或单一晶片内产生）已制成单片多波长垂直腔面发射激光器列阵。一个这样的列阵可提供光纤通信中波分复用所需的多个波长，现在对每一波长来说都需有单一封装的器件。可用于大批量生产的方法将驱使器件成本下降 Researchers at the University of California, Berkeley, have made arrays of monolithic multiwavelength vertical-cavity surface-emitting lasers in a way that produces self-tuning wavelengths (created between wafers or in a single wafer). One such array provides multiple wavelengths required for wavelength division multiplexing in optical fiber communications, and now requires a single packaged device for each wavelength. The method available for mass production will drive device costs down