@article{Dr Haidara Abdulrahman Abdalla_2021, title={ Polarization Mode Dispersion Monitoring by Measuring the Amplitude of the Pulses Produced by Combining the Two Orthogonal Polarization Components}, volume={37}, url={http://journal.damascusuniversity.edu.sy/index.php/engj/article/view/2580}, abstractNote={<p><strong>&nbsp;</strong></p> <p><strong>In this paper, a new polarization mode dispersion (PMD) monitoring technique is proposed in optical fiber networks. It is based on converting the two </strong><strong>orthogonal polarization modes</strong><strong> of the monitored signal to the same state of polarization </strong><strong>and then they are coupled together with a&nbsp;<em>phase difference</em>&nbsp;of&nbsp;<em>(180</em>º). The amplitude of resulting pulses is measured which is proportional to the differential group delay (DGD)</strong><strong> of the fiber link</strong> <strong>which describes the PMD of the optical fiber link.</strong></p> <p><strong>The proposed technique is characterized, compared with other monitoring techniques, by </strong><strong>good monitoring range</strong><strong>, high sensitivity, </strong><strong>no modification of the transmitter,</strong> <strong>simple scheme,</strong><strong> not affected by chromatic dispersion (CD), fast response time and the ability to work with different </strong><strong>bit rates without requiring any hardware modification</strong><strong>,</strong></p> <p><strong>VPIphotonics</strong> <strong>simulator</strong><strong> was used to </strong><strong>demonstrate the validity of the proposed monitoring technique</strong><strong> and to analyze its performance. </strong></p> <p><strong>&nbsp;</strong></p>}, number={4}, journal={مجلة جامعة دمشق للعلوم الهندسية}, author={Dr Haidara Abdulrahman Abdalla}, year={2021} }