The wavelength tunability and the polarization characteristics of twisted polarization beamsplitting fiber couplers are investigated experimentally and analyzed theoretically. The measured spectrum transmissions and polarization characteristics agree well with the theoretical results. The wavelength working as a polarization beamsplitter can be tuned in the 1.3-1.75 µm wavelength range without significant degradation. Splitting ratios for orthogonally polarized lights are more than 20 dB and less than -20 dB.
© 2001 IEEE
Katsumi Morishita and Tsutomu Yamaguchi, "Wavelength Tunability and Polarization Characteristics of Twisted Polarization Beamsplitting Single-Mode Fiber Couplers," J. Lightwave Technol. 19, 732- (2001)