A multi-channel multi-wavelength spectrum sliced light source for WDM free space broadcasting laser communication system

Hsin-Hung Lin; Chi-Wei Chang; Tz-Yuan Huang; Shyh-Lin Tsao

doi:10.1117/12.614815

12 September 2005 A multi-channel multi-wavelength spectrum sliced light source for WDM free space broadcasting laser communication system

Hsin-Hung Lin, Chi-Wei Chang, Tz-Yuan Huang, Shyh-Lin Tsao

Author Affiliations +

Proceedings Volume 5892, Free-Space Laser Communications V; 58921O (2005) https://doi.org/10.1117/12.614815
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Various wavelength-division-multiplexed (WDM) passive optical network (PON's) have been developed by using spectrum-sliced light source and multiwavelength fiber ring laser source. We design a spectrum-sliced light source for free space WDM broadcasting laser communication system. Fiber ring spectrum-sliced light source can be essentially used to develop a low-cost WDM test bed for free space light source, so it attracts lots of attentions in the wavelength-division-multiplexed (WDM) communication system. Such a wavelength-division-multiplexed (WDM) broadcasting optical networks (BON's) can have a reduced cost of using a simple structure. The spectrum-sliced amplifier spontaneous emission (ASE) light from an erbium-doped fiber amplifier (EDFA) or semiconductor optical amplifier (SOA) were proposed as a suitable light source for multi-Gb/s speed WDM applications recently. The fiber ring light source structure with spectrum slicing has been developed and it can be applied to the dense wavelength-division multiplexing (DWDM) system. And we design some squamosal ball mirrors for free space optical communication. The system is simulated by ray tracing for analyzing the refracted and scattered optical signal. When we consider the effect of Gaussian beam of the incident signal being refracted or scattered by the squamosal mirror, based on the ray tracing study, we investigate the beam uniformity for the covering area. Four cases of the ball mirror are investigated and the fractional energy of the covering range are obtained.

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Hsin-Hung Lin, Chi-Wei Chang, Tz-Yuan Huang, and Shyh-Lin Tsao "A multi-channel multi-wavelength spectrum sliced light source for WDM free space broadcasting laser communication system", Proc. SPIE 5892, Free-Space Laser Communications V, 58921O (12 September 2005); https://doi.org/10.1117/12.614815

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KEYWORDS

Light sources

Wavelength division multiplexing

Mirrors

Fiber lasers

Telecommunications

Reflectors

Structured optical fibers

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