Two-photon fourth-order polarimetery.
We demonstrate a fourth-order polarimeter that employs two-photon detection to measure the fourth-order polarization coherency matrix (FOCM) of an optical signal. We measure the FOCM of picosecond pulses subjected to polarization mode dispersion (PMD). The fourth-order polarimeter distinguishes different PMD states even when the state of polarization, including the degree of polarization, is constant.
Westbrook
Paul S
PS
OFS Laboratories, OFS Fitel, Somerset, New Jersey 08873, USA. westbrook@ofsoptics.com
Wielandy
Stephan
S
Fishteyn
Michael
M