J
J. Conradi
Researcher at bell northern research
Publications - 19
Citations - 683
J. Conradi is an academic researcher from bell northern research. The author has contributed to research in topics: Compatible sideband transmission & Transmission (telecommunications). The author has an hindex of 11, co-authored 19 publications receiving 678 citations.
Papers
More filters
Journal ArticleDOI
Multilevel signaling for increasing the reach of 10 Gb/s lightwave systems
S. Walklin,J. Conradi +1 more
TL;DR: In this paper, the authors investigated the effect of phase modulated to amplitude modulated (PM-AM) relative intensity noise (RIN) on the dispersion-limited distance to the optical carrier.
Patent
Optical modulation system
TL;DR: In this paper, the authors proposed an approach for the generation of broadband vestigial sideband (VSB) signals over optical fibers in which the carrier frequency is in the infrared portion of the electromagnetic spectrum.
Patent
Hybrid single sideband optical modulator
TL;DR: In this article, the authors proposed a method of generating analytic signals via hybrid modulation, where one of the generators and the modulator may be an optical intensity or amplitude modulator and the other a phase (or frequency) modulator.
Journal ArticleDOI
On the relationship between chromatic dispersion and transmitter filter response in duobinary optical communication systems
S. Walklin,J. Conradi +1 more
TL;DR: In this paper, it is shown through numerical simulation that limiting the spectral occupancy of a duobinary optical signal, which can be achieved by an appropriate choice of electrical transmitter filter response, is necessary in order to receive a benefit from Duobinary transmission in single-mode optical communication systems.
Journal ArticleDOI
Effect of Mach-Zehnder modulator DC extinction ratio on residual chirp-induced dispersion in 10-Gb/s binary and AM-PSK duobinary lightwave systems
S. Walklin,J. Conradi +1 more
TL;DR: In this article, it was shown through numerical simulation that residual frequency chirping in lithium niobate external modulators, which accompanies devices with a finite-optical extinction ratio, always degrades the performance of lightwave systems that use optical AM-PSK duobinary signaling.