| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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RZ-DQPSK Signal Amplitude Regeneration Using a Semiconductor Optical Amplifier |
| WU Wen-Han,HUANG Xi,YU Yu**,ZHANG Xin-Liang |
| Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074 |
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| Cite this article: |
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WU Wen-Han, HUANG Xi, YU Yu et al 2012 Chin. Phys. Lett. 29 044205 |
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Abstract An all-optical return-to-zero differential quadrature phase-shift keying (RZ-DQPSK) signal regeneration scheme is experimentally demonstrated. Thanks to the gain saturation effect, common quantum-well semiconductor optical amplifiers have the ability to regenerate the amplitude distorted RZ-DQPSK signal, so amplitude noise can be reduced while phase information will not be distorted. A significant eye-opening improvement and a negative power penalty of about 1 dB can be achieved for an 80 Gb/s RZ-DQPSK signal.
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Received: 29 September 2011
Published: 04 April 2012
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| PACS: |
42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.30.Lr
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(Modulation and optical transfer functions)
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42.55.Px
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(Semiconductor lasers; laser diodes)
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42.60.Da
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(Resonators, cavities, amplifiers, arrays, and rings)
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