| Presentation | 2010-01-29 Improvement of contrast ratio with waveguide-type optical circuit for QPSK label recognition Yoshihiro MAKIMOTO, Hitoshi HIURA, Nobuo GOTO, SHin-ichiro YANAGIYA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Optical processing is expected to realize routing nodes in photonic networks. In label routing networks, a device to recognize optical labels is required. We have proposed a waveguide type optical device for recognizing optical Quadri Phase Shift Keying (QPSK) labels. The phase identification circuit for the QPSK optical labels consists of a 3-dB directional couple, two Y-junctions and an asymmetic X-junction. By using interference between an optical QPSK pulse and identifying pulse, the circuit recognizes the optical phase. QPSK labels consisting of plural symbols can also be recognized by connectiong the basic module devices in a tree structure through a phase adjustment circuit. In this paper, We propose an improvement method of the contrast ratio for the waveguide-type optical device for two-symbol recognition and discuss itsw scalability to identification of plural-symbol labels. Finally, we verify the device operation by theoretical analysis and the BPM simulation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | QPSK optical code / Optical labels recognition / Self routing / Optical integrated circuit |
| Paper # | PN2009-76,OPE2009-214,LQE2009-196 |
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| Committee | PN |
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| Conference Date | 2010/1/21(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Photonic Network (PN) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improvement of contrast ratio with waveguide-type optical circuit for QPSK label recognition |
| Sub Title (in English) | |
| Keyword(1) | QPSK optical code |
| Keyword(2) | Optical labels recognition |
| Keyword(3) | Self routing |
| Keyword(4) | Optical integrated circuit |
| 1st Author's Name | Yoshihiro MAKIMOTO |
| 1st Author's Affiliation | The University of Tokushima, Faculty of Engineering, Department of Optical Science and Technology() |
| 2nd Author's Name | Hitoshi HIURA |
| 2nd Author's Affiliation | The University of Tokushima, Faculty of Engineering, Department of Optical Science and Technology |
| 3rd Author's Name | Nobuo GOTO |
| 3rd Author's Affiliation | The University of Tokushima, Faculty of Engineering, Department of Optical Science and Technology |
| 4th Author's Name | SHin-ichiro YANAGIYA |
| 4th Author's Affiliation | The University of Tokushima, Faculty of Engineering, Department of Optical Science and Technology |
| Date | 2010-01-29 |
| Paper # | PN2009-76,OPE2009-214,LQE2009-196 |
| Volume (vol) | vol.109 |
| Number (no) | 401 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |