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Journal Article
Extinction Ratio Improvement and Negative Bit-Error-Rate Penalty in Mach–Zehnder Interferometric Wavelength Converter for Optical 2R Regeneration
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- Authors
- Dong Churl Kim, Min Yong Jeon, Young Ahn Lee, Eun Deok Shim, Dae Su Yee, Kyung Hyun Park
- Issue Date
- 2005-12
- Citation
- Japanese Journal of Applied Physics, v.44, no.11, pp.8010-8012
- ISSN
- 0021-4922
- Publisher
- Japan Society of Applied Physics (JSAP), Institute of Physics (IOP)
- Language
- English
- Type
- Journal Article
- Abstract
- We have fabricated a semiconductor optical amplifier-based Mach-Zehnder interferometric wavelength converter with preamplifiers. For 2R regeneration, we have measured the extinction ratio (ER) and the bit-error-rate (BER) penalty of the wavelength-converted signal by optimizing the applied currents to the preamplifiers in varying the ER of a non-return-to-zero input signal at 10 Gbit/s. The ER was more improved and the BER showed a larger negative power penalty for an input with a smaller ER. For a typical input signal with a 5 dB ER, the ER improvement was 5.5 dB and the power penalty was -2.6 dB. © 2005 The Japan Society of Applied Physics.
- KSP Keywords
- 10 Gbit/s, Applied physics, Bit-error-rate(BER), Input signal, Mach-Zehnder(MZ), Optical 2R regeneration, Semiconductor optical amplifiers(SOAs), extinction ratio, nonreturn-to-zero(NRZ), power penalty, return-to-zero(RZ)