Optical transceiver

An optical transceiver configured to be pluggable to an apparatus in a first direction, the optical transceiver comprising:

• a housing having a rectangular parallelepiped shape and an optical receptacle, the rectangular parallelepiped shape being long in the first direction, the optical receptacle being configured to be out from the apparatus when the optical transceiver is plugged to the apparatus;
• a plurality of optical subassemblies each having a sleeve that is long in the first direction, each of the plurality of optical subassemblies being configured to perform a photoelectric conversion between an optical signal and an electrical signal, the sleeve facing to the optical receptacle, the plurality of optical subassemblies being housed in the housing;
• a plurality of inner fibers each connected to the sleeve one to one, the plurality of inner fibers being housed in the housing;
• and
• a tray housed in the housing, the tray having a holding part and a guiding part, the holding part being configured to hold the plurality of optical subassemblies in line along a second direction that crosses the first direction, the guiding part being formed on both outer sides of the holding part in the second direction and a folding back area on an opposite side of the optical receptacle in the first direction, the guiding part including a pair of passage parts on the outer sides of the holding part,
• wherein only the pair of passage parts allows every single of the inner fibers extending from the sleeve thereof to enter the folding back area.