Optical wavelength interrogator employing the free spectral range of an arrayed waveguide grating

2003 ◽  
Author(s):  
Yasukazu Sano ◽  
Noritomo Hirayama ◽  
Toshihiko T. Yoshino
Keyword(s):  
Spectral Range ◽  
Free Spectral Range ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Optical Wavelength ◽  
Arrayed Waveguide

Enhanced Design for AWG-Based Dynamic Reconfigurable Free-Spectral-Range Group Hopping Coder/Decoders to Protect against Eavesdropping

2015 ◽  
Vol 764-765 ◽  
pp. 1240-1244
Author(s):  
Yao Tang Chang ◽  
Chung Wei Tsailin
Keyword(s):  
Spectral Range ◽  
Code Division Multiple Access ◽  
Multiple Access ◽  
Free Spectral Range ◽  
Optical Switches ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Sequence Code ◽  
Code Division Multiple ◽  
Arrayed Waveguide

To further robust confidentiality protecting against eavesdropping over optical code-division multiple-access (OCDMA) networks, this study improves the robustness of the network toward eavesdropping for encryption/decryption mechanism by using a specified storage register controller controlling optical switches approach in which Free-spectral-range group hopping code is used to generate a specific signature address. This paper presents an enhanced security mechanism to protect spectral-amplitude-coding optical code-division multiple-access (SAC-OCDMA) networks against eavesdropping. This study proposes an alternative to huge code-space size techniques such as wavelength hopping and exchange-encode for network protection against eavesdropping by exploiting the cyclic properties of arrayed-waveguide-grating routers and maximal-length sequence code (M-sequence code). In addition, the network is protected using a wavelength hopping based on optical switches and exchange the encode assignment scheme implemented using the exchange switches before import to arrayed-waveguide-grating routers (AWG).In this scheme, eavesdropper is difficult to solute correct user data bit , whatever there is using brute-force searching or simple energy detector..

scholarly journals Broad-spectral-range synchronized flat-top arrayed-waveguide grating applied in a 225-channel cascaded spectrometer

2012 ◽  
Vol 20 (16) ◽  
pp. 18313 ◽  
Author(s):  
B. I. Akca ◽  
C. R. Doerr ◽  
G. Sengo ◽  
K. Wörhoff ◽  
M. Pollnau ◽  
...  
Keyword(s):  
Spectral Range ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Broad Spectral Range ◽  
Arrayed Waveguide

Optical wavelength router using arrayed-waveguide grating

2000 ◽  
Author(s):  
Guoping Zhang ◽  
Yanping Li ◽  
Ge Xia ◽  
Qi Lin ◽  
Huamei Tian ◽  
...  
Keyword(s):  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Wavelength Router ◽  
Optical Wavelength ◽  
Arrayed Waveguide
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