1 August 1991 High-quality 2 x 2 and 4 x 4 wavelength-flatted couplers for sensor applications
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Proceedings Volume 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91; (1991) https://doi.org/10.1117/12.50068
Event: International Conference on Optical Fibre Sensors in China, 1991, Wuhan, China
Abstract
A low-loss, high-quality 2X2 wavelength-flattered coupler (WFC) and a new 4X4 star WFC are presented. The typical excess loss of the 2X2 WFC with 50% coupling ratio is less than 0.2 dB with less than +/- 5% deviation of coupling ratio over the wavelength range from 1250 nm to 1600 nm. The typical excess loss of the 4X4 WFC is less than 0.5 dB with less than +/- 2% deviations of coupling ratio for two of the four outputs, and less than +/- 10% for the other two outputs over the wavelength range from 1250 nm to 1600 nm. The package sizes are (Phi) 5X50 mm and (Phi) 6X140 mm, respectively, for the moment.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David Jisen Xu, Yi Zhang, Xiang Zhang, "High-quality 2 x 2 and 4 x 4 wavelength-flatted couplers for sensor applications", Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); doi: 10.1117/12.50068; https://doi.org/10.1117/12.50068
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