Qian Liang

Title: Innovations of Qian Liang in Optical Coherent Transponders

Introduction

Qian Liang is an accomplished inventor based in Allen, TX (US). He has made significant contributions to the field of optical communications, particularly in the development of systems and methods for bias error correction in optical coherent transponders. His work has implications for improving the performance and reliability of optical communication systems.

Latest Patents

Qian Liang holds a patent titled "Bias error correction in an optical coherent transponder." This patent describes systems and methods for detecting and correcting bias errors in optical coherent transponders. The invention involves an 'outer' modulator that, when properly biased, produces a phase offset of 1 patent between in-phase and quadrature components of the optical signals transmitted. The method includes providing input to a transponder to generate a periodic output signal, measuring the optical power of positive and negative harmonics, and adjusting the bias voltage of the modulator to eliminate bias errors.

Career Highlights

Qian Liang is currently employed at Fujitsu Corporation, where he continues to innovate in the field of optical technologies. His expertise in optical coherent transponders has positioned him as a key contributor to advancements in this area.

Collaborations

One of his notable coworkers is Emilio Bravi, with whom he collaborates on various projects related to optical communications.

Conclusion

Qian Liang's contributions to the field of optical coherent transponders demonstrate his innovative spirit and commitment to advancing technology. His patent on bias error correction is a testament to his expertise and the impact of his work in the industry.