The Experts below are selected from a list of 234 Experts worldwide ranked by ideXlab platform
M Yoneyama - One of the best experts on this subject based on the ideXlab platform.
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a burst mode apd rosa using Reset Signal with less than 100 ns response for 1g 10g epon dual rate optical transceivers
Journal of Lightwave Technology, 2011Co-Authors: T Kurosaki, Makoto Nakamura, Susumu Nishihara, Yusuke Ohtomo, Akira Okada, M YoneyamaAbstract:A burst-mode APD-ROSA using a Reset Signal with a very short response time to a burst-mode optical input Signal ( λ = ~1300 nm, modulation formats of on-off-keying) for a 10G-EPON and GE-PON dual-rate system was developed. We analytically investigated the relationship between the response time and the multiplication characteristics of an APD to reduce the response time. From the calculation results, we determined a suitable resistance for a bias circuit that enabled us to obtain three key characteristics of burst-mode receiver performance, namely high sensitivity, wide dynamic range and short response time. We fabricated an APD-ROSA based on the calculation results, and demonstrated burst-mode receiver operation with a fast response of about 80 ns but without degrading the sensitivity or distorting the waveform.
T Kurosaki - One of the best experts on this subject based on the ideXlab platform.
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a burst mode apd rosa using Reset Signal with less than 100 ns response for 1g 10g epon dual rate optical transceivers
Journal of Lightwave Technology, 2011Co-Authors: T Kurosaki, Makoto Nakamura, Susumu Nishihara, Yusuke Ohtomo, Akira Okada, M YoneyamaAbstract:A burst-mode APD-ROSA using a Reset Signal with a very short response time to a burst-mode optical input Signal ( λ = ~1300 nm, modulation formats of on-off-keying) for a 10G-EPON and GE-PON dual-rate system was developed. We analytically investigated the relationship between the response time and the multiplication characteristics of an APD to reduce the response time. From the calculation results, we determined a suitable resistance for a bias circuit that enabled us to obtain three key characteristics of burst-mode receiver performance, namely high sensitivity, wide dynamic range and short response time. We fabricated an APD-ROSA based on the calculation results, and demonstrated burst-mode receiver operation with a fast response of about 80 ns but without degrading the sensitivity or distorting the waveform.
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burst mode apd rosa using Reset Signal for 1g 10g dual rate olt optical transceiver
2009 14th OptoElectronics and Communications Conference, 2009Co-Authors: T Kurosaki, Makoto Nakamura, Susumu Nishihara, Yusuke Ohtomo, Akira OkadaAbstract:We developed a 1G/10G dual-rate burst-mode APD-ROSA with a Reset Signal. We achieved high performance as regards sensitivity and a dynamic range with a response time of less than 230 ns at 0 – 85°C.
Akira Okada - One of the best experts on this subject based on the ideXlab platform.
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a burst mode apd rosa using Reset Signal with less than 100 ns response for 1g 10g epon dual rate optical transceivers
Journal of Lightwave Technology, 2011Co-Authors: T Kurosaki, Makoto Nakamura, Susumu Nishihara, Yusuke Ohtomo, Akira Okada, M YoneyamaAbstract:A burst-mode APD-ROSA using a Reset Signal with a very short response time to a burst-mode optical input Signal ( λ = ~1300 nm, modulation formats of on-off-keying) for a 10G-EPON and GE-PON dual-rate system was developed. We analytically investigated the relationship between the response time and the multiplication characteristics of an APD to reduce the response time. From the calculation results, we determined a suitable resistance for a bias circuit that enabled us to obtain three key characteristics of burst-mode receiver performance, namely high sensitivity, wide dynamic range and short response time. We fabricated an APD-ROSA based on the calculation results, and demonstrated burst-mode receiver operation with a fast response of about 80 ns but without degrading the sensitivity or distorting the waveform.
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burst mode apd rosa using Reset Signal for 1g 10g dual rate olt optical transceiver
2009 14th OptoElectronics and Communications Conference, 2009Co-Authors: T Kurosaki, Makoto Nakamura, Susumu Nishihara, Yusuke Ohtomo, Akira OkadaAbstract:We developed a 1G/10G dual-rate burst-mode APD-ROSA with a Reset Signal. We achieved high performance as regards sensitivity and a dynamic range with a response time of less than 230 ns at 0 – 85°C.
Yusuke Ohtomo - One of the best experts on this subject based on the ideXlab platform.
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a burst mode apd rosa using Reset Signal with less than 100 ns response for 1g 10g epon dual rate optical transceivers
Journal of Lightwave Technology, 2011Co-Authors: T Kurosaki, Makoto Nakamura, Susumu Nishihara, Yusuke Ohtomo, Akira Okada, M YoneyamaAbstract:A burst-mode APD-ROSA using a Reset Signal with a very short response time to a burst-mode optical input Signal ( λ = ~1300 nm, modulation formats of on-off-keying) for a 10G-EPON and GE-PON dual-rate system was developed. We analytically investigated the relationship between the response time and the multiplication characteristics of an APD to reduce the response time. From the calculation results, we determined a suitable resistance for a bias circuit that enabled us to obtain three key characteristics of burst-mode receiver performance, namely high sensitivity, wide dynamic range and short response time. We fabricated an APD-ROSA based on the calculation results, and demonstrated burst-mode receiver operation with a fast response of about 80 ns but without degrading the sensitivity or distorting the waveform.
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burst mode apd rosa using Reset Signal for 1g 10g dual rate olt optical transceiver
2009 14th OptoElectronics and Communications Conference, 2009Co-Authors: T Kurosaki, Makoto Nakamura, Susumu Nishihara, Yusuke Ohtomo, Akira OkadaAbstract:We developed a 1G/10G dual-rate burst-mode APD-ROSA with a Reset Signal. We achieved high performance as regards sensitivity and a dynamic range with a response time of less than 230 ns at 0 – 85°C.
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A 10-Gb/s Burst-Mode Clock-and-Data Recovery IC with Frequency-Adjusting Dual Gated VCOs
IEICE Transactions on Electronics, 2008Co-Authors: Yusuke Ohtomo, Masafumi Nogawa, Kazuyoshi Nishimura, Shunji Kimura, Tomoaki Yoshida, Tomoaki Kawamura, Minoru Togashi, Kiyomi KumozakiAbstract:A high-speed serial, 10-Gb/s, passive optical network (PON) is a good candidate for a future PON system. However, there are several issues to be solved in extending the physical speed to 10Gb/s. The issues focused on here are not only the data rate, which is eight times higher than that of a conventional GE-PON, but also the instantaneous amplification and synchronization of AC-coupling burst-input data without a Reset Signal. An input amplifier with data-edge detection can both detect levelvarying input due to AC-coupling and respond to the first bit of a burst packet. Another issue discussed here is tolerance to long consecutive identical digits (CIDs). A burst-mode clock-and-data recovery (CDR) using dual gated VCOs (G-VCOs) is designed for 10-Gb/s operation. The relation between the frequency difference of the dual G-VCOs and CID tolerance is derived with a frequency tunable G-VCO circuit. The burst-mode CDR IC is implemented in a 0.13-μm CMOS process. It successfully operates at a data rate of 10.3125Gb/s. The CDR IC using the edge-detection input amplifier and the G-VCO CDR core achieves amplification and synchronization in 0.2ns with AC-coupling without a Reset Signal. The IC also demonstrates 1001bits of CID tolerance, which is more than enough tolerance for 65-bit CIDs in the 64B/66B code of 10 Gigabit Ethernet. Measured data suggest that dual G-VCOs on a die have over a 20-MHz frequency difference and that the frequency adjusting between the G-VCOs is effective for increasing CID tolerance.
Minkyu Song - One of the best experts on this subject based on the ideXlab platform.
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ISCAS - A one-shot digital correlated double sampling with a differential difference amplifier for a high speed CMOS image sensor
2015 IEEE International Symposium on Circuits and Systems (ISCAS), 2015Co-Authors: Shiwon Jeon, Seol Namgung, Minkyu SongAbstract:In order to raise the operating speed of a CMOS image sensor (CIS), a new technique of digital correlated double sampling (CDS) is described. In general, a fixed pattern noise (FPN) of a CIS has been reduced with the subtraction algorithm between the Reset Signal and pixel Signal. This is because a single-slope analog-to-digital converter (ADC) has been normally adopted in the conventional digital CDS with the Reset ramp and Signal ramp. Thus, the operating speed of a digital CDS is much slower than that of an analog CDS. In order to improve the operating speed, we propose a one-shot digital CDS based on a differential difference amplifier (DDA) that compares the Reset Signal and the pixel Signal using only one ramp. The prototype CIS has been fabricated with 0.13μm CIS technology and it has the VGA resolution of 640×480. The measured conversion time is 16 μs, and a high frame rate of 131fps is achieved at the VGA resolution.
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A High Speed CMOS Image Sensor with a Novel Digital Correlated Double Sampling and a Differential Difference Amplifier
Sensors, 2015Co-Authors: Minkyu SongAbstract:In order to increase the operating speed of a CMOS image sensor (CIS), a new technique of digital correlated double sampling (CDS) is described. In general, the fixed pattern noise (FPN) of a CIS has been reduced with the subtraction algorithm between the Reset Signal and pixel Signal. This is because a single-slope analog-to-digital converter (ADC) has been normally adopted in the conventional digital CDS with the Reset ramp and Signal ramp. Thus, the operating speed of a digital CDS is much slower than that of an analog CDS. In order to improve the operating speed, we propose a novel digital CDS based on a differential difference amplifier (DDA) that compares the Reset Signal and the pixel Signal using only one ramp. The prototype CIS has been fabricated with 0.13 µm CIS technology and it has the VGA resolution of 640 × 480. The measured conversion time is 16 µs, and a high frame rate of 131 fps is achieved at the VGA resolution.
