Paper
4 November 1996 Hybrid AM-VSB/digital optical transmission system without increased modulation bandwidth
Paul N. Freeman, Niloy K. Dutta
Author Affiliations +
Proceedings Volume 2917, Broadband Access Systems; (1996) https://doi.org/10.1117/12.257315
Event: Photonics East '96, 1996, Boston, MA, United States
Abstract
The performance of a hybrid AM-VSB/BPSK optical fiber transmission system is presented. A BPSK modulated 2 MHz pseudo-random digital channel was substituted for one of the AM channels in a 60 channel CATV system and optically transmitted using a directly modulated analog 1.3 micrometer DFB laser. This substituted channel method does not increase the frequency bandwidth of the system. The intermodulation distortion effects were studied. No degradation of the AM channels was observed unless the modulation depth of the BPSK channel is increased to the point where laser clipping effects become significant.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Paul N. Freeman and Niloy K. Dutta "Hybrid AM-VSB/digital optical transmission system without increased modulation bandwidth", Proc. SPIE 2917, Broadband Access Systems, (4 November 1996); https://doi.org/10.1117/12.257315
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KEYWORDS
Modulation

Amplitude modulation

Distortion

Analog electronics

Composites

Optical fibers

Bandpass filters

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