NDLI: Design considerations of all-optical A/D conversion: nonlinear fiber-optic Sagnac-loop interferometer-based optical quantizing and coding

Content Provider	IEEE Xplore Digital Library
Author	Ikeda, K. Abdul, J.M. Tobioka, H. Inoue, T. Namiki, S. Kitayama, K.
Copyright Year	1983
Abstract	The authors describe in detail the design considerations of our previously proposed novel optical quantizing and coding method for all-optical analog-to-digital (A/D) conversion using nonlinear optical switches based on the Sagnac interferometer. The multiperiod transfer function, which is the key to quantizing and coding, is achieved through a careful design of the Sagnac interferometer. In the experiments, the intensity of the pulse train input to our A/D converter is manually changed, and the corresponding digital signals are successfully mapped generated. Although the input-pulse trains are not the sampling of real analog signal, the principle of our proposed 3-bit A/D conversion at a 10 gigasample per second (Gsps) rate is demonstrated. The proposed optical quantizing and coding, combined with existing optical sampling techniques, will enable ultrafast photonic A/D conversion without electronics. The potential in the frequency regime of over a few hundred gigasamples per second was investigated by using an optical switch that utilizes the optical Kerr effect for fast operation. It was found out that the wavelength allocations and temporal widths of control and probe pulses have to be optimized with respect to the group-velocity dispersion of highly nonlinear fiber.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	2618
Ending Page	2628
Page Count	11
File Size	926701
File Format	PDF
ISSN	07338724
Volume Number	24
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical interferometry Optical design Optical fibers Fiber nonlinear optics Ultrafast optics Nonlinear optics Sagnac interferometers Optical switches Optical pulse generation Sampling methods Sagnac interferometer Nonlinear optical loop mirror (NOLM) optical analog-to-digital (A/D) conversion optical-signal processing optical switch
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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