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Polarization independent narrow channel wavelength division multiplexing fiber couplers for 1.55 μm

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3 Author(s)
McLandrich, M. ; US Naval Ocean Syst. Center, San Diego, CA, USA ; Orazi, R.J. ; Marlin, H.R.

A polarization-independent narrow-channel (PINC) wavelength division multiplexing (WDM) coupler for operation at 1.55 μm has been designed based on the birefringent properties of fused single-mode couplers. These couplers are made from both conventional single-mode fiber (SMF) and dispersion shifted fiber (DSF). The couplers are designed so that the coupling-coefficient-length products for the two orthogonal polarizations are π out of phase. As a result of the long coupling lengths required, these couplers have very small cross-sectional dimensions, typically on the order of 10 μm

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Lightwave Technology, Journal of  (Volume:9 ,  Issue: 4 )