Introduction: 1x1 optical switch - features low insertion loss wide wavelength range low crosstalk high stability, high reliability epoxy-free on optical path latching and non-latching 1x1 optical switch - applications r&d in laboratory system monitoring oadm man (metropolitan area network) Sun-fsw-1x1 optical switch, which is famous for its high performance, low insertion loss and compact dimension: (l)27.0x(w)12.6x(h)8.2mm. It is an ideal component for oadm, oxc, system monitoring and protection. With compact package, it can be easy to integrate into a high density optical communication system.