如以前本刊和其它一些刊物报导中所指示的那样,在过去的两三年里,集成光学研究的重点是在不断地改变着。在寻求新材料工作方面,所付出的努力已愈来愈少了。目前,集成光学研究的兴趣集中在进一步提高现有器件的性能和设计新的器件结构等问题上。在这一方面不仅新工艺的出现是一个标志,而且已有一些关于应用方向的研究的初 As previously reported in this issue and in other publications, the focus of integrated optics research has changed over the past two or three years. There has been less and less hard work in seeking new materials. At present, the interests of integrated optical research are focused on the issues of further improving the performance of existing devices and designing new device structures. In this respect, not only is the appearance of the new process a symbol, but there are already some studies on the direction of application