It is possible to perform reset free operation in devices having
polarization state controllers by employing specific sequences of phase
shifters and couplers. In particular, sequences comprising a
coupler/phase shifter/coupler or phase shifter/coupler/phase shifter
formed in, for example, a semiconductor substrate, e.g. silicon
substrate, is used to form the polarization state controller. For
example, a sequence functions as a quarter wave plate equivalent while
two combined sequences function as a half wave plate. Moreover, sequences
functioning as wave plates more general than quarter wave plates are
advantageously employed. Control of the couplers and phase shifters of
these sequences yield reset free or reset free, fully deterministic
operation.