Pluggable optical transceiver with highly shielded structure

An optical transceiver having strengthened tolerance to electro-magnetic-induced noise, comprising:

• a metal upper housing;
• a metal lower housing forming an optical receptacle co-operating with said metal upper housing;
• a metal cover for forming a cavity cooperating with said upper and lower housings;
• an optical assembly having at least a metal sleeve protruding in said optical receptacle;
• a substrate including first and second portions each within said cavity and a third portion outside of said cavity, said first, and second portions installing an electronic circuit electrically communicating with said optical assembly, said second portion being divided from said third portion by a first conductor provided on a first surface of said substrate,
• a resin holder plated with metal and including a supporting portion, and a pair of latch arms extending from said supporting portion, said resin holder fixing said optical assembly against said upper housing and said lower housing,
• wherein said resin holder provides a conductive elastic member in said supporting portion to be between said holder and said lower housing, and
• wherein said upper and lower housings are electrically connected with said first conductor.