| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1538644 | Optics Communications | 2010 | 5 Pages |
Abstract
We propose and experimentally demonstrate an all-optical format conversion from two independent non-return-to-zero on–off keying (NRZ-OOK) signals to a return-to-zero quadrature phase shift keying (RZ-QPSK) signal using two cascaded SOAs. Within each SOA, the cross phase modulation (XPM) process is properly controlled by an assistant light. After evaluating its effect on XPM, a suitable power range of assistant light is chosen for the NRZ-OOK to RZ-QPSK format conversion. In the experiment, a RZ-QPSK signal is successfully obtained with opened demodulation eye-diagrams.
Keywords
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Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Y. Gao, C. Shu, S. He,