Photonic analog-to-digital converter using Mach-Zehnder modulators having identical half-wave voltages with improved bit resolution
Applied Optics, Vol. 48, Issue 22, pp. 4458-4467 (2009)
http://dx.doi.org/10.1364/AO.48.004458
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Abstract
A novel approach to perform photonic analog-to-digital conversion with improved bit resolution is proposed and investigated. Instead of using Mach–Zehnder modulators (MZMs) with geometrically-scaled half-wave voltages, the MZMs in the approach have identical half-wave voltages, which greatly simplifies the implementation. To improve the bit resolution without increasing the number of MZMs, each MZM is connected with multiple comparators having multiple thresholds. The quantization and encoding are performed based on the symmetrical number system (SNS) technique. Three new quantization and encoding schemes based on the SNS are proposed and demonstrated. A
© 2009 Optical Society of America
OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(230.0250) Optical devices : Optoelectronics
ToC Category:
Optical Devices
History
Original Manuscript: February 24, 2009
Revised Manuscript: July 15, 2009
Manuscript Accepted: July 16, 2009
Published: July 27, 2009
Citation
Shuna Yang, Chao Wang, Hao Chi, Xianmin Zhang, Shilie Zheng, Xiaofeng Jin, and Jianping Yao, "Photonic analog-to-digital converter using Mach-Zehnder modulators having identical half-wave voltages with improved bit resolution," Appl. Opt. 48, 4458-4467 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-22-4458
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