| 摘要 |
<p>A wideband polarization splitter and combiner (10) is fabricated using either fiber coupler (20, 30) technology or planar coupler technology. The device splits or combines (10) wideband light signal without losing a substantial amount of spectral information. An antipodal phase generator (12) is used to split a randomly polarized light signal into relatively wideband polarization components for use by polarization sensitive devices. The optical device is fabricated using polarization preserving fibers or waveguides but is intended for use in systems employing non-polarization-preserving fibers. The polarization splitter/combiner is also used as the basis for an isolator/circulator and polarization controller (10). The polarization controller (10) converts a randomly polarized light signal into a signal having a known and definite state of polarization.</p> |
