W. Shieh et al., A POLARIZATION-INDEPENDENT AND CONTRAST-RATIO-ENHANCING MODULE FOR ALL-OPTICAL WAVELENGTH SHIFTING USING SOAS, IEEE photonics technology letters, 8(4), 1996, pp. 533-535
We demonstrate a polarization-independent and contrast-ratio-enhancing
all-optical wavelength shifting module using polarization-dependent S
OA's, When comparing our robust module to a single polarization-depend
ent SOA wavelength shifter, we reduce the polarization dependence from
3.5-0.5 dB and the contrast-ratio-induced power penalty from 5-1.5 dB
when upshifting over 19 mm at 1 Gb/s.