在光通信中,信号的光-电-光转换限制了通信速度而且能产生大量废热。最近,英国和德国的物理学家联合研制了一种通过外部激光脉冲开关的半导体激光器,该器件能避免通信系统中光-电信号的转变。这种半导体激光器称为“空穴孤子激光器”,它是基于垂直腔面发射二极管激光器(VCSEL) In optical communications, optical-electrical-optical conversion of signals limits the speed of communication and can generate a large amount of waste heat. Recently, British and German physicists jointly developed a semiconductor laser that uses an external laser pulse switch that avoids the conversion of optical-electrical signals in communications systems. This type of semiconductor laser, called a hole soliton laser, is based on a vertical cavity surface emitting diode laser (VCSEL)