The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
Xinliang Zhang - One of the best experts on this subject based on the ideXlab platform.
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all optical canonical logic units based programmable logic array clus pla using semiconductor optical amplifiers
Journal of Lightwave Technology, 2012Co-Authors: Lei Lei, Jianji Dong, Sisi Tan, Xinliang ZhangAbstract:All-optical programmable logic arrays (PLAs) based on canonical logic units (CLUs), i.e., Minterms and maxterms, are presented. We experimentally demonstrated the full set of two-input and three-input Minterms as well as maxterms using the cross-gain modulation in semiconductor optical amplifiers (SOAs). Maxterms can be easily obtained based on Minterms. The reconfigurability and scalability of the system are largely enhanced compared to our previous work. Correct and clear temporal waveforms are achieved for all the canonical logic units. The measured extinction ratios of two-input and three-input CLUs are ~ 15 dB and ~ 11 dB, respectively. Based on the CLUs, both sum-of-products and product-of-sums typed PLAs are exhibited. Six important logic functions, including full-adder, full-subtractor, multiplier, multiplexer, demultiplexer and decoder, are presented as examples to show that the canonical logic units-based programmable logic array (CLUs-PLA) can be reconfigured to perform different logic functions. The features of simple architectures, integration ability of SOA and programmable filter enable the great integration potential for CLUs-PLA.
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reconfigurable four input photonic logic Minterms and maxterms generation using soas
IEEE Photonics Technology Letters, 2012Co-Authors: Yin Zhang, Jianji Dong, Lei Lei, Xinliang ZhangAbstract:A generation approach of photonic logic Minterms and maxterms, which is fully reconfigured Minterms and maxterms for four-input 40-Gb/s differential phase-shift keying (DPSK) signals, has been demonstrated based on delay interferometers and semiconductor optical amplifiers. The maxterms are directly derived by inverting the corresponding Minterms, according to their complementary characteristics. Reconfigurations of the scheme, enabled by tuning either the phase shift of delay interferometer or input wavelength, are shown among 16 Minterms, as well as corresponding maxterms. A full set of Minterms and maxterms are captured with clear open eye diagrams and extinction ratios of over 10 and 8 dB, respectively, which indicate the potential of further realizing arbitrary complex logic operations.
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40gb s all optical binary coded decimal decoder
Asia Communications and Photonics conference and Exhibition, 2011Co-Authors: Lei Lei, Jianji Dong, Yin Zhang, Xinliang ZhangAbstract:We have experimentally demonstrated a 40Gb/s all-optical binary-coded-decimal (BCD) decoder for the first time, utilizing delay interferometers (DIs) and cascading semiconductor optical amplifiers (SOAs) without any assisting light. Extinction ratios (ERs) of the intermediate results after the first SOA are all over 11dB which ensures the capability to cascade to the second one. The final results are in the form of return-to-zero (RZ) format with correct and clear temporal waveforms. The proposed scheme could be extended to 1-of-16 decoder, logic Minterms and read only memory (ROM).
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40 gb s 16 ary all optical logic Minterms generation for four line inputs
IEEE Photonics Technology Letters, 2011Co-Authors: Lei Lei, Jianji Dong, Yin Zhang, Xinliang ZhangAbstract:We have experimentally demonstrated 16-ary all-optical logic Minterms for four-line inputs at 40 Gb/s utilizing delay interferometers (DIs) and cascading semiconductor optical amplifiers (SOAs) without any assisting light. Extinction ratios (ERs) of the intermediate results after the first SOA are all over 11 dB which ensures the capability to cascade to the second one. The final results are in the form of return-to-zero (RZ) format with correct and clear temporal waveforms. The proposed scheme should be a promising candidate for constructing arbitrary more complex logic functions.
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all optical logic Minterms for three input demodulated differential phase shift keying signals at 40 gb s
IEEE Photonics Technology Letters, 2011Co-Authors: Xuebing Chen, Xinliang ZhangAbstract:The 40-Gb/s all-optical logic Minterms generation of three input demodulated return-to-zero differential phase-shift-keying signals is demonstrated based on two delayed interferometers and a semiconductor optical amplifier cascaded with two bandpass filters. Experimental demonstration verifies the logic integrity of this scheme. The final results are derived in the on-off keying format with clear open eyes and extinction ratios over 10 dB. The proposed scheme could be extended to realize arbitrary complex logic gates.
Lei Lei - One of the best experts on this subject based on the ideXlab platform.
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all optical three input logic Minterms generation using semiconductor optical amplifier based sagnac interferometer
Electronics Letters, 2013Co-Authors: Lei Lei, J. Dong, F Da Ros, Christophe Peucheret, X ZhangAbstract:All-optical three-input logic Minterms are generated at 42 Gbit/s with a Sagnac interferometer by using cross-phase modulation in a semiconductor optical amplifier. To the best of the author's knowledge, this is the first time that high-speed logic operations with more than two inputs have been experimentally demonstrated in a Sagnac interferometer. Correct and clear temporal waveforms are successfully observed. Bit error ratios and optical signal-to-noise ratios are measured to demonstrate the effectiveness of the method. As the basic units of combinational logic operations, logic Minterms are promising candidates to construct reconfigurable and programmable logic functions.
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all optical canonical logic units based programmable logic array clus pla using semiconductor optical amplifiers
Journal of Lightwave Technology, 2012Co-Authors: Lei Lei, Jianji Dong, Sisi Tan, Xinliang ZhangAbstract:All-optical programmable logic arrays (PLAs) based on canonical logic units (CLUs), i.e., Minterms and maxterms, are presented. We experimentally demonstrated the full set of two-input and three-input Minterms as well as maxterms using the cross-gain modulation in semiconductor optical amplifiers (SOAs). Maxterms can be easily obtained based on Minterms. The reconfigurability and scalability of the system are largely enhanced compared to our previous work. Correct and clear temporal waveforms are achieved for all the canonical logic units. The measured extinction ratios of two-input and three-input CLUs are ~ 15 dB and ~ 11 dB, respectively. Based on the CLUs, both sum-of-products and product-of-sums typed PLAs are exhibited. Six important logic functions, including full-adder, full-subtractor, multiplier, multiplexer, demultiplexer and decoder, are presented as examples to show that the canonical logic units-based programmable logic array (CLUs-PLA) can be reconfigured to perform different logic functions. The features of simple architectures, integration ability of SOA and programmable filter enable the great integration potential for CLUs-PLA.
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reconfigurable four input photonic logic Minterms and maxterms generation using soas
IEEE Photonics Technology Letters, 2012Co-Authors: Yin Zhang, Jianji Dong, Lei Lei, Xinliang ZhangAbstract:A generation approach of photonic logic Minterms and maxterms, which is fully reconfigured Minterms and maxterms for four-input 40-Gb/s differential phase-shift keying (DPSK) signals, has been demonstrated based on delay interferometers and semiconductor optical amplifiers. The maxterms are directly derived by inverting the corresponding Minterms, according to their complementary characteristics. Reconfigurations of the scheme, enabled by tuning either the phase shift of delay interferometer or input wavelength, are shown among 16 Minterms, as well as corresponding maxterms. A full set of Minterms and maxterms are captured with clear open eye diagrams and extinction ratios of over 10 and 8 dB, respectively, which indicate the potential of further realizing arbitrary complex logic operations.
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40gb s all optical binary coded decimal decoder
Asia Communications and Photonics conference and Exhibition, 2011Co-Authors: Lei Lei, Jianji Dong, Yin Zhang, Xinliang ZhangAbstract:We have experimentally demonstrated a 40Gb/s all-optical binary-coded-decimal (BCD) decoder for the first time, utilizing delay interferometers (DIs) and cascading semiconductor optical amplifiers (SOAs) without any assisting light. Extinction ratios (ERs) of the intermediate results after the first SOA are all over 11dB which ensures the capability to cascade to the second one. The final results are in the form of return-to-zero (RZ) format with correct and clear temporal waveforms. The proposed scheme could be extended to 1-of-16 decoder, logic Minterms and read only memory (ROM).
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40 gb s 16 ary all optical logic Minterms generation for four line inputs
IEEE Photonics Technology Letters, 2011Co-Authors: Lei Lei, Jianji Dong, Yin Zhang, Xinliang ZhangAbstract:We have experimentally demonstrated 16-ary all-optical logic Minterms for four-line inputs at 40 Gb/s utilizing delay interferometers (DIs) and cascading semiconductor optical amplifiers (SOAs) without any assisting light. Extinction ratios (ERs) of the intermediate results after the first SOA are all over 11 dB which ensures the capability to cascade to the second one. The final results are in the form of return-to-zero (RZ) format with correct and clear temporal waveforms. The proposed scheme should be a promising candidate for constructing arbitrary more complex logic functions.
Jianji Dong - One of the best experts on this subject based on the ideXlab platform.
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all optical canonical logic units based programmable logic array clus pla using semiconductor optical amplifiers
Journal of Lightwave Technology, 2012Co-Authors: Lei Lei, Jianji Dong, Sisi Tan, Xinliang ZhangAbstract:All-optical programmable logic arrays (PLAs) based on canonical logic units (CLUs), i.e., Minterms and maxterms, are presented. We experimentally demonstrated the full set of two-input and three-input Minterms as well as maxterms using the cross-gain modulation in semiconductor optical amplifiers (SOAs). Maxterms can be easily obtained based on Minterms. The reconfigurability and scalability of the system are largely enhanced compared to our previous work. Correct and clear temporal waveforms are achieved for all the canonical logic units. The measured extinction ratios of two-input and three-input CLUs are ~ 15 dB and ~ 11 dB, respectively. Based on the CLUs, both sum-of-products and product-of-sums typed PLAs are exhibited. Six important logic functions, including full-adder, full-subtractor, multiplier, multiplexer, demultiplexer and decoder, are presented as examples to show that the canonical logic units-based programmable logic array (CLUs-PLA) can be reconfigured to perform different logic functions. The features of simple architectures, integration ability of SOA and programmable filter enable the great integration potential for CLUs-PLA.
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reconfigurable four input photonic logic Minterms and maxterms generation using soas
IEEE Photonics Technology Letters, 2012Co-Authors: Yin Zhang, Jianji Dong, Lei Lei, Xinliang ZhangAbstract:A generation approach of photonic logic Minterms and maxterms, which is fully reconfigured Minterms and maxterms for four-input 40-Gb/s differential phase-shift keying (DPSK) signals, has been demonstrated based on delay interferometers and semiconductor optical amplifiers. The maxterms are directly derived by inverting the corresponding Minterms, according to their complementary characteristics. Reconfigurations of the scheme, enabled by tuning either the phase shift of delay interferometer or input wavelength, are shown among 16 Minterms, as well as corresponding maxterms. A full set of Minterms and maxterms are captured with clear open eye diagrams and extinction ratios of over 10 and 8 dB, respectively, which indicate the potential of further realizing arbitrary complex logic operations.
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40gb s all optical binary coded decimal decoder
Asia Communications and Photonics conference and Exhibition, 2011Co-Authors: Lei Lei, Jianji Dong, Yin Zhang, Xinliang ZhangAbstract:We have experimentally demonstrated a 40Gb/s all-optical binary-coded-decimal (BCD) decoder for the first time, utilizing delay interferometers (DIs) and cascading semiconductor optical amplifiers (SOAs) without any assisting light. Extinction ratios (ERs) of the intermediate results after the first SOA are all over 11dB which ensures the capability to cascade to the second one. The final results are in the form of return-to-zero (RZ) format with correct and clear temporal waveforms. The proposed scheme could be extended to 1-of-16 decoder, logic Minterms and read only memory (ROM).
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40 gb s 16 ary all optical logic Minterms generation for four line inputs
IEEE Photonics Technology Letters, 2011Co-Authors: Lei Lei, Jianji Dong, Yin Zhang, Xinliang ZhangAbstract:We have experimentally demonstrated 16-ary all-optical logic Minterms for four-line inputs at 40 Gb/s utilizing delay interferometers (DIs) and cascading semiconductor optical amplifiers (SOAs) without any assisting light. Extinction ratios (ERs) of the intermediate results after the first SOA are all over 11 dB which ensures the capability to cascade to the second one. The final results are in the form of return-to-zero (RZ) format with correct and clear temporal waveforms. The proposed scheme should be a promising candidate for constructing arbitrary more complex logic functions.
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reconfigurable all optical logic gates for multi input differential phase shift keying signals design and experiments
Journal of Lightwave Technology, 2009Co-Authors: Xinliang Zhang, Jianji Dong, Yin Zhang, Deming Liu, Dexiu HuangAbstract:Differential phase-shift keying (DPSK) signals are promising candidate for the long-haul transmission systems. However, the development of the all-optical signal processing techniques for the DPSK signals is still in its infancy, especially the all-optical logic operations. In this work, a general scheme for reconfigurable logic gates for multi-input DPSK signals with integration possibility is proposed. Benefiting from the optical logic Minterms developed by two kinds of optical devices, i.e., optical delay interferometers and semiconductor optical amplifiers (SOAs), target logic functions can be realized by combining specific Minterms together. The scheme is reconfigured by changing the phase control of the delay interferometers or the input wavelengths. The latter approach was adopted in the experimental trials. Although the outputs of the scheme are on-off keying (OOK) signals, the data format is compatible with all-optical decision circuits where OOK format is preferred. Two- and three-input experiments are carried out at 20 Gbit/s with nonreturn-to-zero DPSK signals. Various logic operations are demonstrated, including full sets of two- and three-input Minterms, AND, NOR, XOR, and XNOR logic operations where the AND and NOR logic are derived simultaneously and the XOR and XNOR logic are convertible. The optical SNR as well as the Q-factor of the two- and three-input results are measured and compared. It shows that the input powers to the SOAs are critical in achieving good extinction ratio and the Q-factor of logic results degrades when several Minterms are combined. The recovery time of the SOAs need to be optimized as well. Finally, the scaling issues of the scheme are discussed.
M S Alam - One of the best experts on this subject based on the ideXlab platform.
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algorithms for conversion of Minterms to positive polarity reed muller coefficients and vice versa
Information Processing Letters, 1997Co-Authors: Md Mozammel Huq Azad Khan, M S AlamAbstract:In this paper, an algorithm for mapping positive polarity Reed-Muller (PPRM) coefficients from canonical sum of products (CSOP) coefficients is presented. Another algorithm for mapping CSOP coefficients is also presented. Both algorithms are more space efficient than the existing algorithms.
Yin Zhang - One of the best experts on this subject based on the ideXlab platform.
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reconfigurable four input photonic logic Minterms and maxterms generation using soas
IEEE Photonics Technology Letters, 2012Co-Authors: Yin Zhang, Jianji Dong, Lei Lei, Xinliang ZhangAbstract:A generation approach of photonic logic Minterms and maxterms, which is fully reconfigured Minterms and maxterms for four-input 40-Gb/s differential phase-shift keying (DPSK) signals, has been demonstrated based on delay interferometers and semiconductor optical amplifiers. The maxterms are directly derived by inverting the corresponding Minterms, according to their complementary characteristics. Reconfigurations of the scheme, enabled by tuning either the phase shift of delay interferometer or input wavelength, are shown among 16 Minterms, as well as corresponding maxterms. A full set of Minterms and maxterms are captured with clear open eye diagrams and extinction ratios of over 10 and 8 dB, respectively, which indicate the potential of further realizing arbitrary complex logic operations.
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40gb s all optical binary coded decimal decoder
Asia Communications and Photonics conference and Exhibition, 2011Co-Authors: Lei Lei, Jianji Dong, Yin Zhang, Xinliang ZhangAbstract:We have experimentally demonstrated a 40Gb/s all-optical binary-coded-decimal (BCD) decoder for the first time, utilizing delay interferometers (DIs) and cascading semiconductor optical amplifiers (SOAs) without any assisting light. Extinction ratios (ERs) of the intermediate results after the first SOA are all over 11dB which ensures the capability to cascade to the second one. The final results are in the form of return-to-zero (RZ) format with correct and clear temporal waveforms. The proposed scheme could be extended to 1-of-16 decoder, logic Minterms and read only memory (ROM).
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40 gb s 16 ary all optical logic Minterms generation for four line inputs
IEEE Photonics Technology Letters, 2011Co-Authors: Lei Lei, Jianji Dong, Yin Zhang, Xinliang ZhangAbstract:We have experimentally demonstrated 16-ary all-optical logic Minterms for four-line inputs at 40 Gb/s utilizing delay interferometers (DIs) and cascading semiconductor optical amplifiers (SOAs) without any assisting light. Extinction ratios (ERs) of the intermediate results after the first SOA are all over 11 dB which ensures the capability to cascade to the second one. The final results are in the form of return-to-zero (RZ) format with correct and clear temporal waveforms. The proposed scheme should be a promising candidate for constructing arbitrary more complex logic functions.
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reconfigurable all optical logic gates for multi input differential phase shift keying signals design and experiments
Journal of Lightwave Technology, 2009Co-Authors: Xinliang Zhang, Jianji Dong, Yin Zhang, Deming Liu, Dexiu HuangAbstract:Differential phase-shift keying (DPSK) signals are promising candidate for the long-haul transmission systems. However, the development of the all-optical signal processing techniques for the DPSK signals is still in its infancy, especially the all-optical logic operations. In this work, a general scheme for reconfigurable logic gates for multi-input DPSK signals with integration possibility is proposed. Benefiting from the optical logic Minterms developed by two kinds of optical devices, i.e., optical delay interferometers and semiconductor optical amplifiers (SOAs), target logic functions can be realized by combining specific Minterms together. The scheme is reconfigured by changing the phase control of the delay interferometers or the input wavelengths. The latter approach was adopted in the experimental trials. Although the outputs of the scheme are on-off keying (OOK) signals, the data format is compatible with all-optical decision circuits where OOK format is preferred. Two- and three-input experiments are carried out at 20 Gbit/s with nonreturn-to-zero DPSK signals. Various logic operations are demonstrated, including full sets of two- and three-input Minterms, AND, NOR, XOR, and XNOR logic operations where the AND and NOR logic are derived simultaneously and the XOR and XNOR logic are convertible. The optical SNR as well as the Q-factor of the two- and three-input results are measured and compared. It shows that the input powers to the SOAs are critical in achieving good extinction ratio and the Q-factor of logic results degrades when several Minterms are combined. The recovery time of the SOAs need to be optimized as well. Finally, the scaling issues of the scheme are discussed.