Improving the performance of electrical duty-cycle division multiplexing with optimum signal level spacing
Document Type
Article
Publication Date
4-1-2012
Abstract
Performance optimization of 3 x 10 Gbps conventional electrical-duty-cycle division multiplexing (C-E-DCDM) technique is investigated. It is shown that controlling signal level spacing can optimize its performance. Two level spacing optimization techniques, one in electrical domain and another in optical domain are examined. In general, performance of the C-E-DCDM is improved significantly using both approaches. The results show by optimization, an improvement of around 5.5 dB can be achieved for the C-E-DCDM in terms of receiver sensitivity and optical signal-to-noise ratio using both electrical and optical methods. However, chromatic dispersion tolerance in one of the optimization approaches is degraded by around 34 ps/nm for negative dispersion, while the positive dispersion tolerance improved compared to the C-E-DCDM. (C) 2011 Elsevier B.V. All rights reserved.
Keywords
optical fiber communication systems, multiplexing techniques, duty-cycle division multiplexing (dcdm), amplitude distribution controller, dual-drive mach-zehnder Modulator (dd-mzm), bias voltage optimization, mach-zehnder modulators, wdm transmission, systems, fiber.
Divisions
fac_eng
Publication Title
Optics Communications
Volume
285
Issue
7
Publisher
Optics Communications
Additional Information
902JW Times Cited:0 Cited References Count:20