Apparatus and method for optimizating bias voltage of electro-optic modulator and electro-optic transmitting system

摘要

1. Technical Field of the invention defined in the claims; The present invention relates to an optical transmission system will bias voltage optimization apparatus and method for an optical modulator and using the same.; 2. The invention attempts to solve the technical challenges; The present invention is a bias voltage of an optical modulator for stabilizing the bias operating voltage applied to the light modulator in accordance with taking into account the point that the size of the form and the clock component of the optical output signal change, automatically bias the initialization control according to the bias of an optical modulator optimizing device and also to provide a method and an optical transmission system using the same.; 3. Resolution of the subject matter of the invention,; The present invention according to bias voltage optimization apparatus of an optical modulator in an optical transmission system, the clock component extraction for extracting a clock frequency component in the frequency components of the broadband spectrum of the light modulator means; Detecting the electrical strength of the extraction frequency by searching for the minimum points of the electrical intensity, the intensity of the electric signal of the current detection such that the electrical minimum point, the bias voltage while varying the predetermined bias voltage controlling the bias operating voltage is adaptively control means; And, including a bias voltage control means for adjusting a bias operating voltage of said light modulator under the control of the bias voltage control means.; 4. An important use of the invention,; The invention yiyongdoem like optical transmitter.