Title :
Novel Bipolar Photonic Digital-to-Analog Conversion Employing Differential Phase Shift Keying Modulation and Balanced Detection
Author :
Jinxin Liao ; He Wen ; Xiaoping Zheng ; Peng Xiang ; Hanyi Zhang ; Bingkun Zhou
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
A novel weighed and summing bipolar photonic digital-to-analog converter (BPDAC) scheme employing optical differential phase shift keying modulation and balanced detection is proposed and demonstrated in a proof-of-principle experiment of three-bit resolution and 2.5-GS/s conversion rate. Compared with the existing unipolar PDAC schemes, this BPDAC has a greater dynamic range and a larger noise margin. Compared with our previously proposed BPDAC based on optical differential quadrature phase shift keying modulation, it is much more robust to the phase detuning, and the tolerable range is greatly expanded from ±1° to ±18°.
Keywords :
differential phase shift keying; digital-analogue conversion; integrated optics; BPDAC; balanced detection; bipolar photonic digital-to-analog conversion; differential phase shift keying modulation; dynamic range; noise margin; phase detuning; Optical interferometry; Optical modulation; Optical receivers; Optical signal processing; Optical transmitters; Phase modulation; Photonics; Balanced detection; bipolar photonic digital-to-analog converter (BPDAC); delay-time interferometer; optical differential phase shift keying (ODPSK) modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2228258
