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Main Title: 25 Gbit/s differential phase-shift-keying signal generation using directly modulated quantum-dot semiconductor optical amplifiers
Author(s): Zeghuzi, A.
Schmeckebier, H.
Stubenrauch, M.
Meuer, C.
Schubert, C.
Bunge, C.-A.
Bimberg, Dieter
Type: Article
Language Code: en
Abstract: Error-free generation of 25-Gbit/s differential phase-shift keying (DPSK) signals via direct modulation of InAs quantum-dot (QD) based semiconductor optical amplifiers (SOAs) is experimentally demonstrated with an input power level of −5 dBm. The QD SOAs emit in the 1.3-μm wavelength range and provide a small-signal fiber-to-fiber gain of 8 dB. Furthermore, error-free DPSK modulation is achieved for constant optical input power levels from 3 dBm down to only −11 dBm for a bit rate of 20 Gbit/s. Direct phase modulation of QD SOAs via current changes is thus demonstrated to be much faster than direct gain modulation.
Issue Date: 2015
Date Available: 22-May-2020
DDC Class: 530 Physik
Subject(s): quantum dots
optical properties
data processing
quantum wells
semiconductor optical amplifiers
semiconductor lasers
amplified spontaneous emission
electrical properties and parameters
amplitude modulation
optical communications
Journal Title: Applied Physics Letters
Publisher: American Institute of Physics (AIP)
Publisher Place: Melville, NY
Volume: 106
Issue: 21
Article Number: 213501
Publisher DOI: 10.1063/1.4921785
EISSN: 1077-3118
ISSN: 0003-6951
Notes: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 106, 213501 (2015) and may be found at
Appears in Collections:Inst. Festkörperphysik » Publications

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