  We present a theory for the Josephson effect in an unconventional
superconductor / one-dimensional electron gas / unconventional superconductor
(s/o/s) junction, where the Josephson current is carried by components injected
perpendicular to the interface. When superconductors on both sides have triplet
symmetries, the Josephson current is enhanced at low temperature due to the
zero-energy states formed near the interface. Measuring Josephson current in
this s/o/s junction, we can identify parity of the superconductor.
