Wideband guided-wave periodic multi/demultiplexer with a ring cavity for optical FDM transmission systems

1988 ◽  
Vol 24 (4) ◽  
pp. 210
Author(s):  
K. Oda ◽  
N. Takato ◽  
H. Toba ◽  
K. Nosu
Keyword(s):  
Ring Cavity ◽  
Guided Wave ◽  
Transmission Systems

5 GHz-spaced, eight-channel, guided-wave tunable multi/demultiplexer for optical FDM transmission systems

1987 ◽  
Vol 23 (15) ◽  
pp. 788 ◽  
Author(s):  
H. Toba ◽  
K. Oda ◽  
N. Takato ◽  
K. Nosu
Keyword(s):  
Guided Wave ◽  
Transmission Systems ◽  
5 Ghz

scholarly journals Investigation of Dispersion and Performance Based on Ring Cavity by Birefringent Interleaver for DWDM Transmission Systems

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Tsair-Chun Liang ◽  
Chun-Ting Chen
Keyword(s):  
Wavelength Division Multiplexing ◽  
High Performance ◽  
System Analysis ◽  
Ring Cavity ◽  
Transmission Systems ◽  
Wavelength Division ◽  
Birefringent Crystal ◽  
Multichannel Filter ◽  
Modeling Software ◽  
And Performance

We theoretically investigate a 25 GHz multichannel filter based on ring cavity birefringent optical interleaver for dense wavelength division multiplexing (DWDM) transmission systems. The simulation tool used in this work is the Advanced System Analysis Program (ASAP) optical modeling software. We improve the dispersion performance by employingλ/6 andλ/4 wave plates as birefringent compensators for interleavers. The new structure exhibits a high performance with nearly zero ripple, a channel isolation greater than 102 dB, and a passband utilization of 86% within the C-band. The research results illustrate that our modified scheme can improve the dispersion of more than 76.6% in comparison with the previous studies of optical interleaver with birefringent crystal and ring cavity structures.

Analysis of timing jitter in digital transmission systems

2001 ◽  
Vol 84 (8) ◽  
pp. 1-13
Author(s):  
Kazuhiro Miyauchi ◽  
Isamu Wakabayashi ◽  
Hiroki Shibayama
Keyword(s):  
Digital Transmission ◽  
Timing Jitter ◽  
Transmission Systems

Transmission Systems

IEE Review ◽  
1992 ◽  
Vol 38 (6) ◽  
pp. 234
Author(s):  
Peter J. Dyke
Keyword(s):  
Transmission Systems

A compact guided-wave EMAT with pulsed electromagnet for ferromagnetic tube inspection

2020 ◽  
Vol 64 (1-4) ◽  
pp. 951-958
Author(s):  
Tianhao Liu ◽  
Yu Jin ◽  
Cuixiang Pei ◽  
Jie Han ◽  
Zhenmao Chen
Keyword(s):  
Power Plants ◽  
Signal To Noise Ratio ◽  
Small Diameter ◽  
Performance Testing ◽  
Guided Wave ◽  
High Signal ◽  
Receiver Coil ◽  
Signal To Noise ◽  
Corrosion Defects

Small-diameter tubes that are widely used in petroleum industries and power plants experience corrosion during long-term services. In this paper, a compact inserted guided-wave EMAT with a pulsed electromagnet is proposed for small-diameter tube inspection. The proposed transducer is noncontact, compact with high signal-to-noise ratio and unattractive to ferromagnetic tubes. The proposed EMAT is designed with coils-only configuration, which consists of a pulsed electromagnet and a meander pulser/receiver coil. Both the numerical simulation and experimental results validate its feasibility on generating and receiving L(0,2) mode guided wave. The parameters for driving the proposed EMAT are optimized by performance testing. Finally, feasibility on quantification evaluation for corrosion defects was verified by experiments.

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