0.1-nm narrow bandwidth transmission of a 2.5-Gb/s spectrum-sliced incoherent light channel using an all-optical bandwidth expansion technique at the receiver

1998 ◽  
Vol 10 (10) ◽  
pp. 1501-1503 ◽  
Author(s):  
Jung-Hee Han ◽  
Joon-Won Ko ◽  
Jae Seung Lee ◽  
Sang-Yung Shin
Keyword(s):  
Incoherent Light ◽  
Expansion Technique ◽  
Narrow Bandwidth ◽  
All Optical ◽  
Bandwidth Expansion ◽  
Optical Bandwidth

scholarly journals Field trial of a 15 Tb/s adaptive and gridless OXC supporting elastic 1000-fold all-optical bandwidth granularity

2011 ◽  
Vol 19 (26) ◽  
pp. B235 ◽  
Author(s):  
N. Amaya ◽  
G. S. Zervas ◽  
B. Rahimzadeh Rofoee ◽  
M. Irfan ◽  
Y. Qin ◽  
...  
Keyword(s):  
Field Trial ◽  
All Optical ◽  
Optical Bandwidth

SYMMETRIC COMMUNICATION IN ALL-OPTICAL TREE NETWORKS

2000 ◽  
Vol 10 (04) ◽  
pp. 305-313 ◽  
Author(s):  
IOANNIS CARAGIANNIS ◽  
CHRISTOS KAKLAMANIS ◽  
PINO PERSIANO
Keyword(s):  
Optical Networks ◽  
Wavelength Division Multiplexing ◽  
High Performance ◽  
Optical Network ◽  
Engineering Problem ◽  
Wavelength Division ◽  
All Optical ◽  
Underlying Network ◽  
Special Case ◽  
Optical Bandwidth

We address the problem of allocating optical bandwidth to a set of communication requests in a tree-shaped all-optical network that utilizes Wavelength Division Multiplexing (WDM) technology. WDM technology establishes communication between pairs of nodes of the network by establishing tranceiver–receiver paths and assigning wavelengths to each path so that no two paths going through the same link use the same wavelength. Optical bandwidth is the number of distinct wavelengths. The important engineering problem to be solved is to establish communication between pairs of nodes so that the total number of wavelengths used is minimized. In this paper, we focus on a special case of the problem considering patterns of requests that are symmetric, i.e. for any transmitter–receiver pair of nodes (v1, v2) there also exists its symmetric (v2, v1). Our motivation lies in the fact that many services that are expected to be supported by high performance optical networks in the future, require bidirectional reservation of bandwidth. We prove that the problem of optimizing the number of wavelengths used is NP-hard even when the underlying network is a binary tree. We also present two interesting lower bounds.

scholarly journals A novel design of fast and compact all-optical full-adder using nonlinear resonant cavities

2021 ◽  
Author(s):  
Saleh Naghizade ◽  
Hamed Saghaei
Keyword(s):  
Time Delay ◽  
Light Propagation ◽  
Resonant Cavity ◽  
Full Adder ◽  
Resonant Cavities ◽  
Expansion Technique ◽  
All Optical ◽  
Small Footprint ◽  
Silicon Rods ◽  
Doped Glass

Abstract In this paper, we report a new design of all-optical full-adder using two nonlinear resonators. The PhC-based full-adder consists of three input ports (A, B, and C for input bits), two nonlinear resonant cavities, several waveguides, and two output ports (for the Sum and Carry). Eight silicon rods and a nonlinear rod composed of doped glass form each resonant cavity. The well-known plane wave expansion technique is used to calculate the photonic band structure. It shows a wide photonic bandgap in the wavelength range of 1365 nm to 2074 nm covering the C and L optical transmission bands. The finite-difference time-domain method is applied to study the light propagation inside the full-adder. Our numerical results demonstrate when the incoming light intensity increases, the nonlinear optical Kerr effect appears and controls the direction of light emitted inside the structure as desired. The maximum time delay and footprint of the proposed full-adder are about 3ps and 758.5 µm2, respectively. Therefore, due to the low time delay and small footprint, the presented design can be used as a basic mathematical operator in the all-optical arithmetic logic unit.

Distributed 1-Tb/s all-optical aggregation capacity in 125-GHz optical bandwidth by frequency conversion in fiber

2015 ◽  
Author(s):  
Thomas Richter ◽  
Carsten Schmidt-Langhorst ◽  
Robert Elschner ◽  
Lutz Molle ◽  
Saleem Alreesh ◽  
...  
Keyword(s):  
Frequency Conversion ◽  
All Optical ◽  
Optical Bandwidth
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