20 April 1995 Low-loss fiber-based wavelength-division multiplexer
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Wavelength Division Multiplexing (WDM) is currently being investigated for ground-based fiber optic networks as a means to achieve high aggregate data rates and/or to allow the use of lower power lasers at a given rate by adding additional channels. A drawback to using WDM techniques for space applications has been that most of the WDM devices used to combine wavelengths are lossy, particularly when implemented with integrated optics or fiber gratings. The additional loss is not important for ground-based applications because it can be overcome by adding gain (with an erbium-doped fiber amplifier, for example). For space applications, where size, weight, and power consumption are critical, the excess loss is a serious drawback. We describe here a very low-loss technique for wavelength combining using standard fiber components. The technique is scalable to moderate numbers of wavelengths while maintaining low loss. Low loss means that these multiplexers can be used for applications such as power combining that are not feasible with traditional techniques. Experimental results confirming low loss power combining will be presented.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Eric A. Swanson, Eric A. Swanson, Jeffrey C. Livas, Jeffrey C. Livas, Roy Sidney Bondurant, Roy Sidney Bondurant, } "Low-loss fiber-based wavelength-division multiplexer", Proc. SPIE 2381, Free-Space Laser Communication Technologies VII, (20 April 1995); doi: 10.1117/12.207407; https://doi.org/10.1117/12.207407

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