The Experts below are selected from a list of 2202 Experts worldwide ranked by ideXlab platform
P.r. Prucnal - One of the best experts on this subject based on the ideXlab platform.
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All-optical clock Division with mode-locked figure-eight laser based on the slow carrier recovery rate in semiconductor optical amplifier
IEEE Photonics Technology Letters, 2002Co-Authors: Lei Xu, B.c. Wang, I. Glesk, P.r. PrucnalAbstract:With a mode-locked figure-eight laser, we demonstrate the clock Division Operation using a semiconductor optical amplifier (SOA) with a slow carrier recovery rate. We show stable clock Division at 2.5 GHz and two output states at half the repetition rate of the 10 GHz input pulses. The forming pulses in the laser cavity will interact with each other at the onset of mode locking when the SOA in the laser has a relatively slow carrier recovery rate. A numerical model of the laser is built to simulate the generation of clock Division.
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All-optical clock-Division Operation using a mode-locked fiber laser based on the slow carrier recovery rate of SOA
LEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (Cat. No.01CH37242), 2001Co-Authors: Lei Xu, B.c. Wang, V. Baby, I. Glesk, P.r. Prucnal, Jianfeng ZhangAbstract:Summary form only given. In OTDM systems, separate channels at the same frame rate are multiplexed in time domain into a high-speed aggregate data stream. To access the individual time slots, high-speed all-optical clock Division can be used to generate optical clock signal at the frame rate for time-domain demultiplexing. We build a numerical model of a mode-locked semiconductor fiber laser that uses a TOAD as an optical modulator and performs clock Division. Moreover, we show that clock Division Operation can be realized when the SOA in the TOAD has a relatively slow carrier recovery rate.
Lei Xu - One of the best experts on this subject based on the ideXlab platform.
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All-optical clock Division with mode-locked figure-eight laser based on the slow carrier recovery rate in semiconductor optical amplifier
IEEE Photonics Technology Letters, 2002Co-Authors: Lei Xu, B.c. Wang, I. Glesk, P.r. PrucnalAbstract:With a mode-locked figure-eight laser, we demonstrate the clock Division Operation using a semiconductor optical amplifier (SOA) with a slow carrier recovery rate. We show stable clock Division at 2.5 GHz and two output states at half the repetition rate of the 10 GHz input pulses. The forming pulses in the laser cavity will interact with each other at the onset of mode locking when the SOA in the laser has a relatively slow carrier recovery rate. A numerical model of the laser is built to simulate the generation of clock Division.
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All-optical clock-Division Operation using a mode-locked fiber laser based on the slow carrier recovery rate of SOA
LEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (Cat. No.01CH37242), 2001Co-Authors: Lei Xu, B.c. Wang, V. Baby, I. Glesk, P.r. Prucnal, Jianfeng ZhangAbstract:Summary form only given. In OTDM systems, separate channels at the same frame rate are multiplexed in time domain into a high-speed aggregate data stream. To access the individual time slots, high-speed all-optical clock Division can be used to generate optical clock signal at the frame rate for time-domain demultiplexing. We build a numerical model of a mode-locked semiconductor fiber laser that uses a TOAD as an optical modulator and performs clock Division. Moreover, we show that clock Division Operation can be realized when the SOA in the TOAD has a relatively slow carrier recovery rate.
Massoud Pedram - One of the best experts on this subject based on the ideXlab platform.
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TruncApp: A truncation-based approximate divider for energy efficient DSP applications
Design Automation & Test in Europe Conference & Exhibition (DATE) 2017, 2017Co-Authors: Shaghayegh Vahdat, Mehdi Kamal, Ali Afzali-kusha, Massoud Pedram, Zainalabedin NavabiAbstract:In this paper, we present a high speed yet energy efficient approximate divider where the Division Operation is performed by multiplying the dividend by the inverse of the divisor. In this structure, truncated value of the dividend is multiplied exactly (approximately) by the approximate inverse value of divisor. To assess the efficacy of the proposed divider, its design parameters are extracted and compared to those of a number of prior art dividers in a 45nm CMOS technology. Results reveal that this structure provides 66% and 52% improvements in the area and energy consumption, respectively, compared to the most advanced prior art approximate divider. In addition, delay and energy consumption of the Division Operation are reduced about 94.4% and 99.93%, respectively, compared to those of an exact SRT radix-4 divider. Finally, the efficacy of the proposed divider in image processing application is studied.
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DATE - TruncApp: A truncation-based approximate divider for energy efficient DSP applications
Design Automation & Test in Europe Conference & Exhibition (DATE) 2017, 2017Co-Authors: Shaghayegh Vahdat, Mehdi Kamal, Ali Afzali-kusha, Massoud Pedram, Zainalabedin NavabiAbstract:In this paper, we present a high speed yet energy efficient approximate divider where the Division Operation is performed by multiplying the dividend by the inverse of the divisor. In this structure, truncated value of the dividend is multiplied exactly (approximately) by the approximate inverse value of divisor. To assess the efficacy of the proposed divider, its design parameters are extracted and compared to those of a number of prior art dividers in a 45nm CMOS technology. Results reveal that this structure provides 66% and 52% improvements in the area and energy consumption, respectively, compared to the most advanced prior art approximate divider. In addition, delay and energy consumption of the Division Operation are reduced about 94.4% and 99.93%, respectively, compared to those of an exact SRT radix-4 divider. Finally, the efficacy of the proposed divider in image processing application is studied.
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SEERAD: A high speed yet energy-efficient rounding-based approximate divider
2016 Design Automation & Test in Europe Conference & Exhibition (DATE), 2016Co-Authors: Reza Zendegani, Mehdi Kamal, Arash Fayyazi, Ali Afzali-kusha, Saeed Safari, Massoud PedramAbstract:In this paper, a high speed yet energy-efficient approximate divider for error resilient applications is proposed. For the Division Operation, the divisor is rounded to a value with a specific form resulting in the transformation of the Division Operation to the multiplication one. The proposed approximate divider enjoys the flexibility of increasing the accuracy at the price of higher delay and hardware usage. The efficacy of the proposed approximate divider is evaluated in comparison to three different implementations of the SRT divider. The results show that the delay and energy consumption of the proposed approximate divider are, on average, 14 and 300 times smaller than those of the Radix-2 SRT with the carry-save reminder computation. Additionally, the effectiveness of the proposed approximate divider is studied in an image Division Operation performed in image processing applications. The results suggest the appropriateness of the proposed approximate divider for digital signal processing applications.
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DATE - SEERAD: A high speed yet energy-efficient rounding-based approximate divider
Proceedings of the 2016 Design Automation & Test in Europe Conference & Exhibition (DATE), 2016Co-Authors: Reza Zendegani, Mehdi Kamal, Arash Fayyazi, Ali Afzali-kusha, Saeed Safari, Massoud PedramAbstract:In this paper, a high speed yet energy-efficient approximate divider for error resilient applications is proposed. For the Division Operation, the divisor is rounded to a value with a specific form resulting in the transformation of the Division Operation to the multiplication one. The proposed approximate divider enjoys the flexibility of increasing the accuracy at the price of higher delay and hardware usage. The efficacy of the proposed approximate divider is evaluated in comparison to three different implementations of the SRT divider. The results show that the delay and energy consumption of the proposed approximate divider are, on average, 14 and 300 times smaller than those of the Radix-2 SRT with the carry-save reminder computation. Additionally, the effectiveness of the proposed approximate divider is studied in an image Division Operation performed in image processing applications. The results suggest the appropriateness of the proposed approximate divider for digital signal processing applications.
I. Glesk - One of the best experts on this subject based on the ideXlab platform.
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All-optical clock Division with mode-locked figure-eight laser based on the slow carrier recovery rate in semiconductor optical amplifier
IEEE Photonics Technology Letters, 2002Co-Authors: Lei Xu, B.c. Wang, I. Glesk, P.r. PrucnalAbstract:With a mode-locked figure-eight laser, we demonstrate the clock Division Operation using a semiconductor optical amplifier (SOA) with a slow carrier recovery rate. We show stable clock Division at 2.5 GHz and two output states at half the repetition rate of the 10 GHz input pulses. The forming pulses in the laser cavity will interact with each other at the onset of mode locking when the SOA in the laser has a relatively slow carrier recovery rate. A numerical model of the laser is built to simulate the generation of clock Division.
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All-optical clock-Division Operation using a mode-locked fiber laser based on the slow carrier recovery rate of SOA
LEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (Cat. No.01CH37242), 2001Co-Authors: Lei Xu, B.c. Wang, V. Baby, I. Glesk, P.r. Prucnal, Jianfeng ZhangAbstract:Summary form only given. In OTDM systems, separate channels at the same frame rate are multiplexed in time domain into a high-speed aggregate data stream. To access the individual time slots, high-speed all-optical clock Division can be used to generate optical clock signal at the frame rate for time-domain demultiplexing. We build a numerical model of a mode-locked semiconductor fiber laser that uses a TOAD as an optical modulator and performs clock Division. Moreover, we show that clock Division Operation can be realized when the SOA in the TOAD has a relatively slow carrier recovery rate.
B.c. Wang - One of the best experts on this subject based on the ideXlab platform.
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All-optical clock Division with mode-locked figure-eight laser based on the slow carrier recovery rate in semiconductor optical amplifier
IEEE Photonics Technology Letters, 2002Co-Authors: Lei Xu, B.c. Wang, I. Glesk, P.r. PrucnalAbstract:With a mode-locked figure-eight laser, we demonstrate the clock Division Operation using a semiconductor optical amplifier (SOA) with a slow carrier recovery rate. We show stable clock Division at 2.5 GHz and two output states at half the repetition rate of the 10 GHz input pulses. The forming pulses in the laser cavity will interact with each other at the onset of mode locking when the SOA in the laser has a relatively slow carrier recovery rate. A numerical model of the laser is built to simulate the generation of clock Division.
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All-optical clock-Division Operation using a mode-locked fiber laser based on the slow carrier recovery rate of SOA
LEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (Cat. No.01CH37242), 2001Co-Authors: Lei Xu, B.c. Wang, V. Baby, I. Glesk, P.r. Prucnal, Jianfeng ZhangAbstract:Summary form only given. In OTDM systems, separate channels at the same frame rate are multiplexed in time domain into a high-speed aggregate data stream. To access the individual time slots, high-speed all-optical clock Division can be used to generate optical clock signal at the frame rate for time-domain demultiplexing. We build a numerical model of a mode-locked semiconductor fiber laser that uses a TOAD as an optical modulator and performs clock Division. Moreover, we show that clock Division Operation can be realized when the SOA in the TOAD has a relatively slow carrier recovery rate.