Differential binary phase-shift keying transmission using cascaded semiconductor optical amplifiers

G. Onishchukov, V. Lokhnygin, A. Shipulin, M. Gölles

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

33 Citations (Scopus)

Abstract

Recently the performance of Semiconductor Optical Amplifiers (SOA) in 1.3μn fiber communication systems has been intensively studied and a 10 Gbit/s RZ - transmission over 500 km has been demonstrated in the field and over 1500 km in a re-circulating fiber loop set up using MQW-SOA. It turned out that the performance of such systems is primarily limited by three factors: the fast growth of Amplified Spontaneous Emission (ASE), the pattern effect and the nonlinear impulse-phase distortions in SOA which are caused by the low saturation energy of SOA, the gain recovery time comparable with the bit period and by the strong nonlinearity of SOA. The effects are also important in other systems where cascaded SOA are used, for example, as optical gates. With increasing bit rate in TDM systems and with number of channels in WDM, the effects became stronger and the maximum propagation distances decrease. So in the case of a 4×10 Gbit/s WDM system a 80 km transmission has been experimentally demonstrated and up to 200 km predicted from numerical simulations. The limiting effects and consequently the performance are similar in systems with both NRZ or RZ modulation formats. But using other modulation formats like Phase Shift Keying (PSK) or Frequency-Shift Keying (FSK), where the signal power is constant, it would be possible to avoid these specific for SOA, harmful effects and to approach the performance in the 1.5 μm window. In this paper we present the results on a single channel 10 Gbit/s Differential Binary PSK - Direct Detection (DBPSK-DD) transmission in a 1.3 μm system with in-line MQW-SOA amplifiers. The format has been chosen because of simplicity of the transmitter and receiver designs.

Original languageEnglish
Title of host publicationCLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages513-514
Number of pages2
ISBN (Electronic)0780356616, 9780780356610
DOIs
Publication statusPublished - 1999
Externally publishedYes
Event1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999 - Seoul, Korea, Republic of
Duration: 30 Aug 19993 Sep 1999

Publication series

NameCLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics
Volume2

Conference

Conference1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999
Country/TerritoryKorea, Republic of
CitySeoul
Period30/08/993/09/99

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