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Browsing by Author Le, Duy Tien

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  • Coupled Resonator Induced Transparency (CRIT) Based on Interference Effect.pdf.jpg
  • Article

  • Coupled Resonator Induced Transparency (CRIT) Based on Interference Effect in 4x4 MMI Coupler

    • Authors: Le, Duy Tien; Le, Trung Thanh (2017)

  • We present a study of coupled resonator induced transparency (CRIT) and of coupled resonator induced absorption (CRIA) using only one 4x4 multimode interference coupler and two microring resonators. The structure has advantages of compactness, ease of fabrication on the same chip and no crossover. Our analysis shows that sharp Fano resonance,
  • DEVELOPMENT OF PAM-4 SIGNALING FOR HIGH PERFORMANCE COMPUTING, SUPERCOMPUTERS AND DATA CENTER SYSTEMS.pdf.jpg
  • Article

  • DEVELOPMENT OF PAM-4 SIGNALING FOR HIGH PERFORMANCE COMPUTING, SUPERCOMPUTERS AND DATA CENTER SYSTEMS

    • Authors: Le, Duy Tien; Ngoc-Minh Nguyen, Ngoc Minh; Le, Trung Thanh (2017)

  • We propose a new scheme for multilevel pulse amplitude modulation (PAM-4) signaling for optical interconnects and data center networks. Our approach is to use only one 4x4 multimode interference (MMI) structure with two phase shifters in push-pull configuration. An extreme high bandwidth and compact footprint can be achieved. The whole device is designed using the existing VLSI technology.
  • Fano resonance and EIT like effect based on 4x4 multimode interferance structures.PDF.jpg
  • Article

  • Fano resonance and EIT like effect based on 4x4 multimode interferance structures

    • Authors: Le, Duy Tien; Le, Trung Thanh (2017)

  • We propose a new structure for creating the Fano resonance and electromagnetically induced transparency couplers. The structure is based on 4x4 multimode interference couplers. The proposed devides have advantages of compactness, large tolerance fabrication. The tranfer matrix method (TMM) and numerical methods are used for analytical analysis and design of the device.
  • Fast and slow light enhancement using cascaded microring.pdf.jpg
  • Article

  • Fast and slow light enhancement using cascaded microring resonators with the Sagnac reflector

    • Authors: Le, Duy Tien; Nguyen, Manh Cuong; Le, Trung Thanh (2017)

  • A cascaded microring resonator based on silicon waveguides with an MMI (Multimode Interference) based Sagnac reflector is proposed in this study. By controlling the coupling coefficients with the used of the MMI based Sagnac reflector, the double of both pulse delay and advancement for the slow and fast light can be achieved. The new structure can produce the fast and slow light phenomenon on one chip with a double of the time delay and pulse advancement. By using the Sagnac reflector, the device is very compact. Transfer matrix method and FDTD (Finite Difference Time Domain) simulation are used to obtain the characteristics of the device. The transmission, phase, group delay a...
  • High bandwidth all-optical 3×3 switch based on multimode interference.pdf.jpg
  • Article

  • High bandwidth all-optical 3×3 switch based on multimode interference structures

    • Authors: Le, Duy Tien; Nguyen, Manh Cuong; Le, Trung Thanh (2017)

  • A high bandwidth all-optical 3×3 switch based on general interference multimode interference (GI-MMI) structure is proposed in this study. Two 3×3 multimode interference couplers are cascaded to realize an alloptical switch operating at both wavelengths of 1550 nm and 1310 nm. Two nonlinear directional couplers at two outer-arms of the structure are used as all-optical phase shifters to achieve all switching states and to control the switching states. Analytical expressions for switching operation using the transfer matrix method are presented. The beam propagation method (BPM) is used to design and optimize the whole structure. The optimal design of the all-optical phase shifte...
  • Optical Signal Processing Based on 4×4 Multimode Interference Structures.pdf.jpg
  • Article

  • Optical Signal Processing Based on 4×4 Multimode Interference Structures

    • Authors: Le, Duy Tien; Le, Trung Thanh; Cahill, Laurence W. (2018)

  • All-optical logic gates have attracted considerable attention over the past decade. They have found application as adders, subtractors, header recognizers, parity checkers and in encryption systems. In this paper, we present a new structure based on cascaded 4×4 and 2×2 multimode interference (MMI) couplers for implementing optical XOR, XNOR, NAND and OR logic gates. The emphasis of the design is on optimising bandwidth and fabrication tolerance. Such a design would be useful for optical label swapping and recognition in optical packet switching networks. We use silicon on insulator (SOI) waveguides that are compatible with the CMOS technology, for designing the whole device. The Beam...
  • Sharp Asymmetric Resonance Based on 4x4 Multimode interference coupler.pdf.jpg
  • Article

  • Sharp Asymmetric Resonance Based on 4x4 Multimode Interference Coupler

    • Authors: Le, Duy Tien; Do, The Duong; Nguyen, Van Khoi; Nguyen, Anh Tuan; Le, Trung Thanh (2017)

  • We propose a method for generating the tunable Fano resonance line sharp by using only one 4x4 multimode interference (MMI) coupler. We show that our new device structure acting an interferometer and we employ a microring resonator and phase shifter to control the shape. The analytical analysis and FDTD simulations have been used for the first order design. The device has advantages of compactness, high tolerance fabrication and ease of fabrication on the same chip.

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Browsing by Author Le, Duy Tien

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 2 to 8 of 8
  • Coupled Resonator Induced Transparency (CRIT) Based on Interference Effect.pdf.jpg
  • Article

  • Coupled Resonator Induced Transparency (CRIT) Based on Interference Effect in 4x4 MMI Coupler

    • Authors: Le, Duy Tien; Le, Trung Thanh (2017)

  • We present a study of coupled resonator induced transparency (CRIT) and of coupled resonator induced absorption (CRIA) using only one 4x4 multimode interference coupler and two microring resonators. The structure has advantages of compactness, ease of fabrication on the same chip and no crossover. Our analysis shows that sharp Fano resonance,
  • DEVELOPMENT OF PAM-4 SIGNALING FOR HIGH PERFORMANCE COMPUTING, SUPERCOMPUTERS AND DATA CENTER SYSTEMS.pdf.jpg
  • Article

  • DEVELOPMENT OF PAM-4 SIGNALING FOR HIGH PERFORMANCE COMPUTING, SUPERCOMPUTERS AND DATA CENTER SYSTEMS

    • Authors: Le, Duy Tien; Ngoc-Minh Nguyen, Ngoc Minh; Le, Trung Thanh (2017)

  • We propose a new scheme for multilevel pulse amplitude modulation (PAM-4) signaling for optical interconnects and data center networks. Our approach is to use only one 4x4 multimode interference (MMI) structure with two phase shifters in push-pull configuration. An extreme high bandwidth and compact footprint can be achieved. The whole device is designed using the existing VLSI technology.
  • Fano resonance and EIT like effect based on 4x4 multimode interferance structures.PDF.jpg
  • Article

  • Fano resonance and EIT like effect based on 4x4 multimode interferance structures

    • Authors: Le, Duy Tien; Le, Trung Thanh (2017)

  • We propose a new structure for creating the Fano resonance and electromagnetically induced transparency couplers. The structure is based on 4x4 multimode interference couplers. The proposed devides have advantages of compactness, large tolerance fabrication. The tranfer matrix method (TMM) and numerical methods are used for analytical analysis and design of the device.
  • Fast and slow light enhancement using cascaded microring.pdf.jpg
  • Article

  • Fast and slow light enhancement using cascaded microring resonators with the Sagnac reflector

    • Authors: Le, Duy Tien; Nguyen, Manh Cuong; Le, Trung Thanh (2017)

  • A cascaded microring resonator based on silicon waveguides with an MMI (Multimode Interference) based Sagnac reflector is proposed in this study. By controlling the coupling coefficients with the used of the MMI based Sagnac reflector, the double of both pulse delay and advancement for the slow and fast light can be achieved. The new structure can produce the fast and slow light phenomenon on one chip with a double of the time delay and pulse advancement. By using the Sagnac reflector, the device is very compact. Transfer matrix method and FDTD (Finite Difference Time Domain) simulation are used to obtain the characteristics of the device. The transmission, phase, group delay a...
  • High bandwidth all-optical 3×3 switch based on multimode interference.pdf.jpg
  • Article

  • High bandwidth all-optical 3×3 switch based on multimode interference structures

    • Authors: Le, Duy Tien; Nguyen, Manh Cuong; Le, Trung Thanh (2017)

  • A high bandwidth all-optical 3×3 switch based on general interference multimode interference (GI-MMI) structure is proposed in this study. Two 3×3 multimode interference couplers are cascaded to realize an alloptical switch operating at both wavelengths of 1550 nm and 1310 nm. Two nonlinear directional couplers at two outer-arms of the structure are used as all-optical phase shifters to achieve all switching states and to control the switching states. Analytical expressions for switching operation using the transfer matrix method are presented. The beam propagation method (BPM) is used to design and optimize the whole structure. The optimal design of the all-optical phase shifte...
  • Optical Signal Processing Based on 4×4 Multimode Interference Structures.pdf.jpg
  • Article

  • Optical Signal Processing Based on 4×4 Multimode Interference Structures

    • Authors: Le, Duy Tien; Le, Trung Thanh; Cahill, Laurence W. (2018)

  • All-optical logic gates have attracted considerable attention over the past decade. They have found application as adders, subtractors, header recognizers, parity checkers and in encryption systems. In this paper, we present a new structure based on cascaded 4×4 and 2×2 multimode interference (MMI) couplers for implementing optical XOR, XNOR, NAND and OR logic gates. The emphasis of the design is on optimising bandwidth and fabrication tolerance. Such a design would be useful for optical label swapping and recognition in optical packet switching networks. We use silicon on insulator (SOI) waveguides that are compatible with the CMOS technology, for designing the whole device. The Beam...
  • Sharp Asymmetric Resonance Based on 4x4 Multimode interference coupler.pdf.jpg
  • Article

  • Sharp Asymmetric Resonance Based on 4x4 Multimode Interference Coupler

    • Authors: Le, Duy Tien; Do, The Duong; Nguyen, Van Khoi; Nguyen, Anh Tuan; Le, Trung Thanh (2017)

  • We propose a method for generating the tunable Fano resonance line sharp by using only one 4x4 multimode interference (MMI) coupler. We show that our new device structure acting an interferometer and we employ a microring resonator and phase shifter to control the shape. The analytical analysis and FDTD simulations have been used for the first order design. The device has advantages of compactness, high tolerance fabrication and ease of fabrication on the same chip.