The Experts below are selected from a list of 28200 Experts worldwide ranked by ideXlab platform
Ray T Chen - One of the best experts on this subject based on the ideXlab platform.
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integrated multi operand electro optic logic gates for Optical Computing
Applied Physics Letters, 2019Co-Authors: Zhoufeng Ying, Zheng Zhao, Chenghao Feng, David Z Pan, Richard A Soref, Ray T ChenAbstract:Integrated Optical Computing has the potential to enhance the computation abilities in terms of Computing speed and power consumption during the post-Moore's law era. As one of the widely investigated approaches, electro-optic logic uses electro-optic switches as the building blocks to achieve complex functions. In this paper, we propose and experimentally demonstrate a multioperand electro-optic logic gate that contains multiple active regions in a single gate to further increase the versatility of gates. Thus, one gate can be controlled by several electrical inputs simultaneously. The ability of multioperand logic gates is thoroughly explored. The detailed comparison shows that the proposed gate can largely improve the circuit performance in terms of the area, latency, power, and insertion loss. We believe the multioperand logic gate has the potential to contribute to a more compact and power-efficient integrated Optical Computing system.
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electro optic ripple carry adder in integrated silicon photonics for Optical Computing
IEEE Journal of Selected Topics in Quantum Electronics, 2018Co-Authors: Zhoufeng Ying, Shounak Dhar, Zheng Zhao, Chenghao Feng, Rohan Mital, Chijui Chung, David Z Pan, Richard A Soref, Ray T ChenAbstract:Photonic integrated circuits with compact size and low power consumption have opened the possibility of realization of ultrahigh-speed and energy-efficient Optical Computing in an integrated system that may be comparable to CMOS-based electrical integrated circuits in many aspects. Directed logic is an innovative paradigm that can make full use of the advantages of electronics and photonics for Optical Computing. In this paper, we propose various designs of directed-logic-based electro-optic ripple-carry adders in integrated silicon photonics, which replace the electrical components in the critical path using Optical counterparts. All control signals are applied simultaneously through ultralow-power microdisk modulators so that the propagation delay could be reduced significantly. A two-bit thermal-optic full adder based on microdisk modulators is demonstrated as a proof of concept along with a projection of high-speed performance. The proposed electro-optic full adder paves the way to future low-power-consumption and large-bandwidth Optical Computing in integrated silicon photonics.
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comparison of microrings and microdisks for high speed Optical modulation in silicon photonics
Applied Physics Letters, 2018Co-Authors: Zhoufeng Ying, Shounak Dhar, Zheng Zhao, David Z Pan, Richard A Soref, Zheng Wang, Ray T ChenAbstract:The past several decades have witnessed the gradual transition from electrical to Optical interconnects, ranging from long-haul telecommunication to chip-to-chip interconnects. As one type of key component in integrated Optical interconnect and high-performance Computing, Optical modulators have been well developed these past few years, including ultrahigh-speed microring and microdisk modulators. In this paper, a comparison between microring and microdisk modulators is well analyzed in terms of dimensions, static and dynamic power consumption, and fabrication tolerance. The results show that microdisks have advantages over microrings in these aspects, which gives instructions to the chip design of high-density integrated systems for Optical interconnects and Optical Computing.
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silicon microdisk based full adders for Optical Computing
Optics Letters, 2018Co-Authors: Zhoufeng Ying, Shounak Dhar, Zheng Zhao, David Z Pan, Richard A Soref, Zheng Wang, Ray T ChenAbstract:Due to the projected saturation of Moore’s law, as well as the drastically increasing trend of bandwidth with lower power consumption, silicon photonics has emerged as one of the most promising alternatives that has attracted a lasting interest due to the accessibility and maturity of ultra-compact passive and active integrated photonic components. In this Letter, we demonstrate a ripple-carry electro-optic 2-bit full adder using microdisks, which replaces the core part of an electrical full adder by Optical counterparts and uses light to carry signals from one bit to the next with high bandwidth and low power consumption per bit. All control signals of the operands are applied simultaneously within each clock cycle. Thus, the severe latency issue that accumulates as the size of the full adder increases can be circumvented, allowing for an improvement in Computing speed and a reduction in power consumption. This approach paves the way for future high-speed Optical Computing systems in the post-Moore’s law era.
Bahram Jalali - One of the best experts on this subject based on the ideXlab platform.
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analog Optical Computing primitives in silicon photonics
Optics Letters, 2016Co-Authors: Yunshan Jiang, Peter T S Devore, Bahram JalaliAbstract:Optical Computing accelerators help alleviate bandwidth and power consumption bottlenecks in electronics. We show an approach to implementing logarithmic-type analog co-processors in silicon photonics and use it to perform the exponentiation operation and the recovery of a signal in the presence of multiplicative distortion. The function is realized by exploiting nonlinear-absorption-enhanced Raman amplification saturation in a silicon waveguide.
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analog Optical Computing primitives in silicon photonics
arXiv: Optics, 2015Co-Authors: Yunshan Jiang, Peter T S Devore, Bahram JalaliAbstract:Optical Computing accelerators may help alleviate bandwidth and power consumption bottlenecks in electronics. We show an approach to implementing logarithmic-type analog co-processors in silicon photonics and use it to perform the exponentiation operation. The function is realized by exploiting nonlinear-absorption-enhanced Raman amplification saturation in a silicon waveguide.
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Analog Optical Computing
Nature Photonics, 2015Co-Authors: Daniel R. Solli, Bahram JalaliAbstract:The concept of Optical Computing is reintroduced with an important new twist — Optical Computing not as a digital machine, but as an analog engine able to serve as a hardware accelerator for existing electronic computers.
Zhoufeng Ying - One of the best experts on this subject based on the ideXlab platform.
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integrated multi operand electro optic logic gates for Optical Computing
Applied Physics Letters, 2019Co-Authors: Zhoufeng Ying, Zheng Zhao, Chenghao Feng, David Z Pan, Richard A Soref, Ray T ChenAbstract:Integrated Optical Computing has the potential to enhance the computation abilities in terms of Computing speed and power consumption during the post-Moore's law era. As one of the widely investigated approaches, electro-optic logic uses electro-optic switches as the building blocks to achieve complex functions. In this paper, we propose and experimentally demonstrate a multioperand electro-optic logic gate that contains multiple active regions in a single gate to further increase the versatility of gates. Thus, one gate can be controlled by several electrical inputs simultaneously. The ability of multioperand logic gates is thoroughly explored. The detailed comparison shows that the proposed gate can largely improve the circuit performance in terms of the area, latency, power, and insertion loss. We believe the multioperand logic gate has the potential to contribute to a more compact and power-efficient integrated Optical Computing system.
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electro optic ripple carry adder in integrated silicon photonics for Optical Computing
IEEE Journal of Selected Topics in Quantum Electronics, 2018Co-Authors: Zhoufeng Ying, Shounak Dhar, Zheng Zhao, Chenghao Feng, Rohan Mital, Chijui Chung, David Z Pan, Richard A Soref, Ray T ChenAbstract:Photonic integrated circuits with compact size and low power consumption have opened the possibility of realization of ultrahigh-speed and energy-efficient Optical Computing in an integrated system that may be comparable to CMOS-based electrical integrated circuits in many aspects. Directed logic is an innovative paradigm that can make full use of the advantages of electronics and photonics for Optical Computing. In this paper, we propose various designs of directed-logic-based electro-optic ripple-carry adders in integrated silicon photonics, which replace the electrical components in the critical path using Optical counterparts. All control signals are applied simultaneously through ultralow-power microdisk modulators so that the propagation delay could be reduced significantly. A two-bit thermal-optic full adder based on microdisk modulators is demonstrated as a proof of concept along with a projection of high-speed performance. The proposed electro-optic full adder paves the way to future low-power-consumption and large-bandwidth Optical Computing in integrated silicon photonics.
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comparison of microrings and microdisks for high speed Optical modulation in silicon photonics
Applied Physics Letters, 2018Co-Authors: Zhoufeng Ying, Shounak Dhar, Zheng Zhao, David Z Pan, Richard A Soref, Zheng Wang, Ray T ChenAbstract:The past several decades have witnessed the gradual transition from electrical to Optical interconnects, ranging from long-haul telecommunication to chip-to-chip interconnects. As one type of key component in integrated Optical interconnect and high-performance Computing, Optical modulators have been well developed these past few years, including ultrahigh-speed microring and microdisk modulators. In this paper, a comparison between microring and microdisk modulators is well analyzed in terms of dimensions, static and dynamic power consumption, and fabrication tolerance. The results show that microdisks have advantages over microrings in these aspects, which gives instructions to the chip design of high-density integrated systems for Optical interconnects and Optical Computing.
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silicon microdisk based full adders for Optical Computing
Optics Letters, 2018Co-Authors: Zhoufeng Ying, Shounak Dhar, Zheng Zhao, David Z Pan, Richard A Soref, Zheng Wang, Ray T ChenAbstract:Due to the projected saturation of Moore’s law, as well as the drastically increasing trend of bandwidth with lower power consumption, silicon photonics has emerged as one of the most promising alternatives that has attracted a lasting interest due to the accessibility and maturity of ultra-compact passive and active integrated photonic components. In this Letter, we demonstrate a ripple-carry electro-optic 2-bit full adder using microdisks, which replaces the core part of an electrical full adder by Optical counterparts and uses light to carry signals from one bit to the next with high bandwidth and low power consumption per bit. All control signals of the operands are applied simultaneously within each clock cycle. Thus, the severe latency issue that accumulates as the size of the full adder increases can be circumvented, allowing for an improvement in Computing speed and a reduction in power consumption. This approach paves the way for future high-speed Optical Computing systems in the post-Moore’s law era.
Richard A Soref - One of the best experts on this subject based on the ideXlab platform.
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integrated multi operand electro optic logic gates for Optical Computing
Applied Physics Letters, 2019Co-Authors: Zhoufeng Ying, Zheng Zhao, Chenghao Feng, David Z Pan, Richard A Soref, Ray T ChenAbstract:Integrated Optical Computing has the potential to enhance the computation abilities in terms of Computing speed and power consumption during the post-Moore's law era. As one of the widely investigated approaches, electro-optic logic uses electro-optic switches as the building blocks to achieve complex functions. In this paper, we propose and experimentally demonstrate a multioperand electro-optic logic gate that contains multiple active regions in a single gate to further increase the versatility of gates. Thus, one gate can be controlled by several electrical inputs simultaneously. The ability of multioperand logic gates is thoroughly explored. The detailed comparison shows that the proposed gate can largely improve the circuit performance in terms of the area, latency, power, and insertion loss. We believe the multioperand logic gate has the potential to contribute to a more compact and power-efficient integrated Optical Computing system.
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electro optic ripple carry adder in integrated silicon photonics for Optical Computing
IEEE Journal of Selected Topics in Quantum Electronics, 2018Co-Authors: Zhoufeng Ying, Shounak Dhar, Zheng Zhao, Chenghao Feng, Rohan Mital, Chijui Chung, David Z Pan, Richard A Soref, Ray T ChenAbstract:Photonic integrated circuits with compact size and low power consumption have opened the possibility of realization of ultrahigh-speed and energy-efficient Optical Computing in an integrated system that may be comparable to CMOS-based electrical integrated circuits in many aspects. Directed logic is an innovative paradigm that can make full use of the advantages of electronics and photonics for Optical Computing. In this paper, we propose various designs of directed-logic-based electro-optic ripple-carry adders in integrated silicon photonics, which replace the electrical components in the critical path using Optical counterparts. All control signals are applied simultaneously through ultralow-power microdisk modulators so that the propagation delay could be reduced significantly. A two-bit thermal-optic full adder based on microdisk modulators is demonstrated as a proof of concept along with a projection of high-speed performance. The proposed electro-optic full adder paves the way to future low-power-consumption and large-bandwidth Optical Computing in integrated silicon photonics.
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comparison of microrings and microdisks for high speed Optical modulation in silicon photonics
Applied Physics Letters, 2018Co-Authors: Zhoufeng Ying, Shounak Dhar, Zheng Zhao, David Z Pan, Richard A Soref, Zheng Wang, Ray T ChenAbstract:The past several decades have witnessed the gradual transition from electrical to Optical interconnects, ranging from long-haul telecommunication to chip-to-chip interconnects. As one type of key component in integrated Optical interconnect and high-performance Computing, Optical modulators have been well developed these past few years, including ultrahigh-speed microring and microdisk modulators. In this paper, a comparison between microring and microdisk modulators is well analyzed in terms of dimensions, static and dynamic power consumption, and fabrication tolerance. The results show that microdisks have advantages over microrings in these aspects, which gives instructions to the chip design of high-density integrated systems for Optical interconnects and Optical Computing.
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silicon microdisk based full adders for Optical Computing
Optics Letters, 2018Co-Authors: Zhoufeng Ying, Shounak Dhar, Zheng Zhao, David Z Pan, Richard A Soref, Zheng Wang, Ray T ChenAbstract:Due to the projected saturation of Moore’s law, as well as the drastically increasing trend of bandwidth with lower power consumption, silicon photonics has emerged as one of the most promising alternatives that has attracted a lasting interest due to the accessibility and maturity of ultra-compact passive and active integrated photonic components. In this Letter, we demonstrate a ripple-carry electro-optic 2-bit full adder using microdisks, which replaces the core part of an electrical full adder by Optical counterparts and uses light to carry signals from one bit to the next with high bandwidth and low power consumption per bit. All control signals of the operands are applied simultaneously within each clock cycle. Thus, the severe latency issue that accumulates as the size of the full adder increases can be circumvented, allowing for an improvement in Computing speed and a reduction in power consumption. This approach paves the way for future high-speed Optical Computing systems in the post-Moore’s law era.
David Z Pan - One of the best experts on this subject based on the ideXlab platform.
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integrated multi operand electro optic logic gates for Optical Computing
Applied Physics Letters, 2019Co-Authors: Zhoufeng Ying, Zheng Zhao, Chenghao Feng, David Z Pan, Richard A Soref, Ray T ChenAbstract:Integrated Optical Computing has the potential to enhance the computation abilities in terms of Computing speed and power consumption during the post-Moore's law era. As one of the widely investigated approaches, electro-optic logic uses electro-optic switches as the building blocks to achieve complex functions. In this paper, we propose and experimentally demonstrate a multioperand electro-optic logic gate that contains multiple active regions in a single gate to further increase the versatility of gates. Thus, one gate can be controlled by several electrical inputs simultaneously. The ability of multioperand logic gates is thoroughly explored. The detailed comparison shows that the proposed gate can largely improve the circuit performance in terms of the area, latency, power, and insertion loss. We believe the multioperand logic gate has the potential to contribute to a more compact and power-efficient integrated Optical Computing system.
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electro optic ripple carry adder in integrated silicon photonics for Optical Computing
IEEE Journal of Selected Topics in Quantum Electronics, 2018Co-Authors: Zhoufeng Ying, Shounak Dhar, Zheng Zhao, Chenghao Feng, Rohan Mital, Chijui Chung, David Z Pan, Richard A Soref, Ray T ChenAbstract:Photonic integrated circuits with compact size and low power consumption have opened the possibility of realization of ultrahigh-speed and energy-efficient Optical Computing in an integrated system that may be comparable to CMOS-based electrical integrated circuits in many aspects. Directed logic is an innovative paradigm that can make full use of the advantages of electronics and photonics for Optical Computing. In this paper, we propose various designs of directed-logic-based electro-optic ripple-carry adders in integrated silicon photonics, which replace the electrical components in the critical path using Optical counterparts. All control signals are applied simultaneously through ultralow-power microdisk modulators so that the propagation delay could be reduced significantly. A two-bit thermal-optic full adder based on microdisk modulators is demonstrated as a proof of concept along with a projection of high-speed performance. The proposed electro-optic full adder paves the way to future low-power-consumption and large-bandwidth Optical Computing in integrated silicon photonics.
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comparison of microrings and microdisks for high speed Optical modulation in silicon photonics
Applied Physics Letters, 2018Co-Authors: Zhoufeng Ying, Shounak Dhar, Zheng Zhao, David Z Pan, Richard A Soref, Zheng Wang, Ray T ChenAbstract:The past several decades have witnessed the gradual transition from electrical to Optical interconnects, ranging from long-haul telecommunication to chip-to-chip interconnects. As one type of key component in integrated Optical interconnect and high-performance Computing, Optical modulators have been well developed these past few years, including ultrahigh-speed microring and microdisk modulators. In this paper, a comparison between microring and microdisk modulators is well analyzed in terms of dimensions, static and dynamic power consumption, and fabrication tolerance. The results show that microdisks have advantages over microrings in these aspects, which gives instructions to the chip design of high-density integrated systems for Optical interconnects and Optical Computing.
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silicon microdisk based full adders for Optical Computing
Optics Letters, 2018Co-Authors: Zhoufeng Ying, Shounak Dhar, Zheng Zhao, David Z Pan, Richard A Soref, Zheng Wang, Ray T ChenAbstract:Due to the projected saturation of Moore’s law, as well as the drastically increasing trend of bandwidth with lower power consumption, silicon photonics has emerged as one of the most promising alternatives that has attracted a lasting interest due to the accessibility and maturity of ultra-compact passive and active integrated photonic components. In this Letter, we demonstrate a ripple-carry electro-optic 2-bit full adder using microdisks, which replaces the core part of an electrical full adder by Optical counterparts and uses light to carry signals from one bit to the next with high bandwidth and low power consumption per bit. All control signals of the operands are applied simultaneously within each clock cycle. Thus, the severe latency issue that accumulates as the size of the full adder increases can be circumvented, allowing for an improvement in Computing speed and a reduction in power consumption. This approach paves the way for future high-speed Optical Computing systems in the post-Moore’s law era.