The performance of intensity modulation of semiconductor lasers can be improved by electrical feedback under proper conditions.

在适当的反馈条件下，电反馈可以较好地改善半导体激光器强度调制的性能。

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The FM noise and AM noise of a negative frequency feedback (NFFB) semiconductor laser(LD)are presented. The FM noise (linewidth)can be reduced greatly by NFFB technique under proper conditions.

本文用半经典理论研究了负频反馈（NFFB）半导体激光器的FM和AM噪声。在适当的条件下，FM噪声（线宽）可用NFFB技术得到极大的抑制。

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It is one of main use of process simulation with SUPREM to gain semiconductor IC process conditions, This paper will introduce how to gain automatically IC process conditions in the proper algorithm.

利用SUPREM进行半导体集成电路工艺条件的萃取是工艺模拟的主要用途之一。本文介绍如何利用适当的算法进行工艺条件的自动萃取。

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