Frontiers of Optoelectronics, 2011, 4 (3): 288, 网络出版: 2012-09-21
Compensation of quadrature imbalance in an optical coherent OQPSK receiver in presence of frequency offset
Compensation of quadrature imbalance in an optical coherent OQPSK receiver in presence of frequency offset
offset quadrature phase shift keying (OQPSK) quadrature imbalance (QI) ellipse fitting frequency offset
摘要
Abstract
In this paper, we describe the impact of quadrature imbalance (QI) in the presence of frequency offset in an optical coherent offset quadrature phase shift keying (OQPSK) receiver. Arbitrary conjugate misalignment was realized in a 24 90° optical hybrid, and the ellipse correction (EC) method of quadrature imbalance was applied in our simulation. In the case of transmission, the EC method can significantly improve the system performance.
Xinying LI, Bo HUANG, Yufeng SHAO, Junwen ZHANG, Shumin ZOU, Wuliang FANG, Li TAO, Jiangbo ZHU, Chi NAN. Compensation of quadrature imbalance in an optical coherent OQPSK receiver in presence of frequency offset[J]. Frontiers of Optoelectronics, 2011, 4(3): 288. Xinying LI, Bo HUANG, Yufeng SHAO, Junwen ZHANG, Shumin ZOU, Wuliang FANG, Li TAO, Jiangbo ZHU, Chi NAN. Compensation of quadrature imbalance in an optical coherent OQPSK receiver in presence of frequency offset[J]. Frontiers of Optoelectronics, 2011, 4(3): 288.
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