Abstract
Since the bandwidth of large-core step-index polymer optical fiber is quite limited, Quadrature Amplitude Modulation is considered to increase the channel capacity. Using two low cost LEDs, at 460nm and 650nm respectively, the in-phase and quadrature-phase signals of the QAM signal are transmitted in two different wavelength channels. In the transmitter the two optical signals were combined with a plastic optical fibre splitter. At the receiving end plastic optical fibre filters were used to separate the blue and red optical signal. The performance of the system has been measured using a vector signal analyser. Using 16 QAM, 60 Mbit/s over 100 m 1 mm core diameter step-index PMMA optical fiber has been realized. This system showed the feasibility of QAM transmission for low-cost high-speed transmission over large core plastic optical fibre. Using higher order QAM transmission and/or using a 650nm red LED with a higher bandwidth, the transmission capacity can be increased further.
| Original language | English |
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| Title of host publication | Proceedings of the 16th International Conference on Plastic Optical Fibers (POF 2007) 10 - 12 September 2007, Turin, Italy |
| Place of Publication | Turin, Italy |
| Pages | 107-110 |
| Publication status | Published - 2007 |
| Event | 16th International Conference on Plastic Optical Fibers (POF 2007) - Turin, Italy Duration: 10 Sept 2007 → 12 Sept 2007 Conference number: 16 |
Conference
| Conference | 16th International Conference on Plastic Optical Fibers (POF 2007) |
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| Abbreviated title | POF 2007 |
| Country/Territory | Italy |
| City | Turin |
| Period | 10/09/07 → 12/09/07 |