Journal
IEEE JOURNAL OF QUANTUM ELECTRONICS
Volume 46, Issue 12, Pages 1696-1703Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JQE.2010.2060714
Keywords
Cross-gain modulation; quantum-dot; semiconductor optical amplifier; wavelength conversion
Categories
Funding
- Japan Society for the Promotion of Science, Tokyo, Japan
Ask authors/readers for more resources
We experimentally study the cross-gain modulation (XGM) in an InAs/InGaAsP/InP columnar quantum-dot semiconductor optical amplifier working in the 1550-nm spectral region. We report 12-nm wavelength conversion of 10, 20, 40, 80, and 160 Gb/s return-to-zero (RZ) signals. We find that pure XGM is effective for wavelength conversion without significant pattern effects up to around 40 Gb/s. At higher bit rates, distortion-free conversion can be obtained by exploiting jointly XGM and some cross-phase modulation that arises at the same time in the amplifier. This can be easily achieved by using a slightly blue-shifted output band-pass filter. By testing the signal integrity by means of the Q(2) factor analysis, we also find that the XGM transfer function attenuates the input intensity noise. Finally, we show how the output inverse-RZ signals obtained in the XGM conversion can be format-converted back to RZ by side-band filtering.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available