ID 110600
Author
Kishikawa, Hiroki Department of Optical Science and Technology, Tokushima University Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Ihara, Akito Department of Optical Science and Technology, Tokushima University
Goto, Nobuo Department of Optical Science and Technology, Tokushima University Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Yanagiya, Shin-ichiro Department of Optical Science and Technology, Tokushima University Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Keywords
code recognition
optical waveguide circuits
optical BPSK code
Content Type
Journal Article
Description
Optical label processing is expected to reduce power consumption in label switching network nodes. Previously, we proposed passive waveguide circuits for the recognition of BPSK labels with a theoretically infinite contrast ratio. The recognizable label number was limited to four and eight for 4-bit and 8-bit BPSK labels, respectively. In this paper, we propose methods to increase the recognizable label number. The proposed circuits can recognize eight and sixteen labels of 4-bit BPSK codes with a contrast ratio of 4.00 and 2.78, respectively. As 8-bit BSPK codes, 64, 128, and 256 labels can be recognized with a contrast ratio of 4.00, 2.78, and 1.65, respectively. In recognition of all encoded labels, that is, 16 and 256 labels for 4-bit and 8-bit BPSK labels, a reference signal is employed to identify the sign of the optical output signals. The effect of phase deviation and loss along the optical waveguides of the devices is also discussed.
Journal Title
IEICE Transactions on Electronics
ISSN
17451353
NCID
AA11510332
Publisher
The Institute of Electronics, Information and Communication Engineers
Volume
E100-C
Issue
1
Start Page
84
End Page
93
Sort Key
84
Published Date
2017-01-01
Remark
(c)2017 The Institute of Electronics, Information and Communication Engineers
IEICE Transactions Online TOP:http://search.ieice.org/
EDB ID
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Publisher
departments
Science and Technology