| Presentation | 2013-07-25 Multi-level signaling in the Stokes space and its application to large-capacity coherent optical transmission Kazuro KIKUCHI, Shojiro KAWAKAMI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The Stokes vector of an optical signal does not depend on its absolute phase but is dependent on the relative phase and the amplitude ratio between the x- and y-polarization component; therefore, we can construct the coherent system whose performance is not dependent on the absolute phase of the signal, using the Stokes vector as the modulation parameter. In such system, multi-level-coded optical signals can effectively be designed in the Stokes space, whereas computational complexity for demodulating the signals is low enough. Although such system has the disadvantage that adaptive equalizers are hardly to be implemented, it is an attractive solution to large-capacity (≧100 Gbit/s) and short-reach (<100km) transmission. In this paper, we discuss how we design the multi-level signal in the Stokes space and how we demodulate such signal using the the digital signal processing (DSP) circuit in the coherent receiver. Simulation results demonstrate that 2-, 4-, 8-, 16-, and 32-ary signals in the Stokes space have good bit-error rate (BER) characteristics. The transmission capacity of 100 Gbit/s is obtained through low-complexity DSP when we employ the 16-ary signal in the Stokes space at the symbol rate of 25 Gsymbol/s. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Coherent optical communications / Polarization modulation / Digital signal processing |
| Paper # | OCS2013-28 |
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| Conference Information | |
| Committee | OCS |
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| Conference Date | 2013/7/18(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Registration To | Optical Communication Systems (OCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Multi-level signaling in the Stokes space and its application to large-capacity coherent optical transmission |
| Sub Title (in English) | |
| Keyword(1) | Coherent optical communications |
| Keyword(2) | Polarization modulation |
| Keyword(3) | Digital signal processing |
| 1st Author's Name | Kazuro KIKUCHI |
| 1st Author's Affiliation | Department of Electrical Engineering and Information Systems, Graduate School of Engineering The University of Tokyo() |
| 2nd Author's Name | Shojiro KAWAKAMI |
| 2nd Author's Affiliation | Photonic Lattice, Inc. |
| Date | 2013-07-25 |
| Paper # | OCS2013-28 |
| Volume (vol) | vol.113 |
| Number (no) | 156 |
| Page | pp.pp.- |
| #Pages | 6 |
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