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All-optical analog-to-digital conversion scheme based on Sagnac loop and balanced receivers |
Applied Optics, Vol. 50, Issue 14, pp. 1995-2000 (2011)
http://dx.doi.org/10.1364/AO.50.001995
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Abstract
An all-optical analog-to-digital conversion scheme based on a Sagnac loop and balanced receivers is proposed and experimentally demonstrated. Adjustable phase shift about the transfer function of the Sagnac loop is obtained by using the multiwavelength optical pulses to realize the phase-shift optical quantization. Benefit from the complementary outputs at the transmitted and reflected ports of the Sagnac loop and balanced receiver can be used to obtain the quantized output binary signal for the encoding operation. A proof-of-concept experiment is implemented using a wavelength tunable continuous-wave laser diode. Using 16 different wavelengths, the 16 quantization levels are demonstrated and an effective number of bits (ENOB) of
© 2011 Optical Society of America
OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2330) Fiber optics and optical communications : Fiber optics communications
(350.4600) Other areas of optics : Optical engineering
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: January 24, 2011
Manuscript Accepted: February 7, 2011
Published: May 4, 2011
Citation
Kun Xu, Jian Niu, Yitang Dai, Xiaoqiang Sun, Jian Dai, Jian Wu, and Jintong Lin, "All-optical analog-to-digital conversion scheme based on Sagnac loop and balanced receivers," Appl. Opt. 50, 1995-2000 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-14-1995
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