Browsing by Author "Ho, Chung-hung"

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Photonic vector signal generation employing a novel optical direct-detection in-phase/quadrature-phase upconversion
(2010-12-01)
Jiang, Wen-Jr
;
Lin, Chun-Ting
;
Ho, Chung-hung
;
Wei, Chia-Chien
;
Shih, Po-Tsung
This work demonstrates the feasibility of the generation of an RF direct-detection vector signal using optical in-phase/quadrature-phase (I/Q) upconversion. The advantage of the proposed transmitter is that no electrical mixer is needed to generate the RF signal. Therefore, I/Q data of RF signals are processed at baseband at the transmitter, which is independent of the carrier frequency of the generated RF signal. A 10 Gb/s 16 quadrature amplitude modulation signal is experimentally demonstrated. Following transmission over a 50 km single-mode fiber, the power penalty is negligible. Moreover, I/Q imbalance of the proposed transmitter is studied and compensated by digital signal processing, which is both numerically and experimentally verified. (C) 2010 Optical Society of America
Photonic vector signal generation employing a novel optical direct-detection in-phase/quadrature-phase upconversion
(2010-12-01)
Jiang, Wen-Jr
;
Lin, Chun-Ting
;
Ho, Chung-hung
;
Wei, Chia-Chien
;
Shih, Po-Tsung
This work demonstrates the feasibility of the generation of an RF direct-detection vector signal using optical in-phase/quadrature-phase (I/Q) upconversion. The advantage of the proposed transmitter is that no electrical mixer is needed to generate the RF signal. Therefore, I/Q data of RF signals are processed at baseband at the transmitter, which is independent of the carrier frequency of the generated RF signal. A 10 Gb/s 16 quadrature amplitude modulation signal is experimentally demonstrated. Following transmission over a 50 km single-mode fiber, the power penalty is negligible. Moreover, I/Q imbalance of the proposed transmitter is studied and compensated by digital signal processing, which is both numerically and experimentally verified. (C) 2010 Optical Society of America