at 1310 nm decreased about 0.1 times as compared to its value
at 660 nm, due to the absence of CdSe QDs related absorption
peak at 1310 nm. This also justifies the use of 660 nm in this
work as an operating wavelength for the Faraday isolator.
Fig. 5 shows the Faraday rotation, i.e., the change in polarization
states, of the CdSe QDs doped optical fiber on a Poincare