Compact evanescent optical switch and attenuator with electromechanical actuation

1999 ◽  
Vol 5 (1) ◽  
pp. 52-59 ◽  
Author(s):  
F. Chollet ◽  
M. de Labachelerie ◽  
H. Fujita
Keyword(s):  
Optical Switch ◽  
Electromechanical Actuation

Scalable Active Optical Access Network Using Variable High-Speed PLZT Optical Switch/Splitter

2012 ◽  
Vol E95-B (3) ◽  
pp. 730-739 ◽  
Author(s):  
Kunitaka ASHIZAWA ◽  
Takehiro SATO ◽  
Kazumasa TOKUHASHI ◽  
Daisuke ISHII ◽  
Satoru OKAMOTO ◽  
...  
Keyword(s):  
High Speed ◽  
Optical Switch ◽  
Access Network ◽  
Optical Access ◽  
Optical Access Network

Polarisation-independent optical switch with cascaded optical switch matrices

1988 ◽  
Vol 24 (15) ◽  
pp. 959 ◽  
Author(s):  
H. Okayama ◽  
A. Matoba ◽  
R. Shibuya ◽  
T. Ishida
Keyword(s):  
Optical Switch

Recovery time for a silicon waveguide all-optical switch

1988 ◽  
Vol 24 (6) ◽  
pp. 303 ◽  
Author(s):  
P.D. Colbourne ◽  
P.E. Jessop
Keyword(s):  
Recovery Time ◽  
Optical Switch ◽  
Silicon Waveguide ◽  
All Optical ◽  
All Optical Switch

Experiment on deflector-selector optical switch matrix

1992 ◽  
Vol 28 (7) ◽  
pp. 638 ◽  
Author(s):  
H. Okayama ◽  
M. Kawahara
Keyword(s):  
Optical Switch

Practical low voltage 2×2 polarisation independent LiNbO3 digital optical switch

1991 ◽  
Vol 27 (12) ◽  
pp. 1025 ◽  
Author(s):  
A. McGuire ◽  
M. Scott ◽  
A.P. Thomas ◽  
R.C. Booth
Keyword(s):  
Low Voltage ◽  
Optical Switch

Hybrid buffer‐based optical packet switch with negative acknowledgment for multilevel data centers

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Sumit Chandra ◽  
Shahnaz Fatima ◽  
Raghuraj Singh Suryavanshi
Keyword(s):  
Data Centers ◽  
Web Applications ◽  
Optical Switch ◽  
Contention Resolution ◽  
Multilevel Data ◽  
All Optical ◽  
Optical Buffering ◽  
Different Types ◽  
Packet Switch ◽  
Novel Design

AbstractIn the present scenario, data centers serve many functionalities like storage, transfer of data, supporting web applications, etc. In data centers, various levels of hierarchy different types of switches are required; therefore, multifunctional data centers are desired. This paper discusses a novel design for optical switch which can be placed at various levels of hierarchy. In the proposed design, multifunctionality contention resolution schemes which consider electronic and optical buffering and all-optical negative acknowledgment (AO-NACK) are considered. In buffering technologies, contending packets are stored in either in electronic RAM or in fiber delay lines. In case of the AO-NACK scheme, contending packets are blocked, and a negative acknowledgment is sent back to the transmitting node and blocked packets are retransmitted. For various considered schemes, Monte Carlo simulation have been performed, results in terms of packet loss probability are presented, and it has been found that the performance of optical buffering is much superior to electronic buffering and AO-NACK schemes. It is found that, in the AO-NACK scheme, the numbers of retransmitted packets due to contention blocking are 33,304 which can be reduced to 7, by using a small amount of buffer at each node.

scholarly journals Graphene Nanoribbon Gap Waveguides for Dispersionless and Low-Loss Propagation with Deep-Subwavelength Confinement

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1302
Author(s):  
Zhiyong Wu ◽  
Lei Zhang ◽  
Tingyin Ning ◽  
Hong Su ◽  
Irene Ling Li ◽  
...  
Keyword(s):  
High Performance ◽  
Chemical Potential ◽  
Shape Change ◽  
Optical Switch ◽  
Pulse Amplitude ◽  
Propagation Distance ◽  
Graphene Nanoribbon ◽  
Low Loss ◽  
High Loss ◽  
On Chip

Surface plasmon polaritons (SPPs) have been attracting considerable attention owing to their unique capabilities of manipulating light. However, the intractable dispersion and high loss are two major obstacles for attaining high-performance plasmonic devices. Here, a graphene nanoribbon gap waveguide (GNRGW) is proposed for guiding dispersionless gap SPPs (GSPPs) with deep-subwavelength confinement and low loss. An analytical model is developed to analyze the GSPPs, in which a reflection phase shift is employed to successfully deal with the influence caused by the boundaries of the graphene nanoribbon (GNR). It is demonstrated that a pulse with a 4 μm bandwidth and a 10 nm mode width can propagate in the linear passive system without waveform distortion, which is very robust against the shape change of the GNR. The decrease in the pulse amplitude is only 10% for a propagation distance of 1 μm. Furthermore, an array consisting of several GNRGWs is employed as a multichannel optical switch. When the separation is larger than 40 nm, each channel can be controlled independently by tuning the chemical potential of the corresponding GNR. The proposed GNRGW may raise great interest in studying dispersionless and low-loss nanophotonic devices, with potential applications in the distortionless transmission of nanoscale signals, electro-optic nanocircuits, and high-density on-chip communications.

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