An optical connector for use with a light separator, the optical connector
including a first portion and a second portion, the first portion being
optically couplable by first optical transmitter to a first input of the
light separator and by second optical transmitter to a second input of
the light separator. The first and second portions are detachably
couplable to couple the first and second optical transmitter to third and
fourth optical transmitters, respectively, provided in or coupled to the
second portion. The first and second inputs of the light separator can
thereby be optically coupled to a first optical instrument coupled to the
third optical transmitter and a second optical instrument coupled to the
fourth optical transmitter.