Abstract: An optical transceiver system includes an optical transceiver module configured to be locked to cage in a host electronic equipment and a key configured to remove the optical transceiver module from the cage, wherein the key comprises two fingers configured to be inserted into the cage and unlock optical transceiver module from the cage.

Abstract: An optical transceiver module includes a housing comprising a first end and a second end, an electrical interface associated with the first end and an optical interface associated with the second end. The electrical interface is adapted to be locked into a receiving cage. The optical interface is adapted to be connected with one or more optical transceiver components. The optical transceiver module includes a locating mechanism that restrains the one or more optical transceiver components. The optical transceiver module also includes a locking mechanism that can lock the optical transceiver module to a receiving cage. The optical transceiver module further includes an automatic-restoring unlocking mechanism comprising a sliding plate, an unlocking lever, and a restoration spring, wherein the automatic restoring unlocking mechanism automatically restores the sliding plate to the normal position after the optical transceiver module is unlocked from the receiving cage.

Abstract: An optical transceiver module includes an optical-to-electrical converter configured to convert a first optical signal to a first electric signal, a first amplifier configured to amplify the first electric signal, a bandwidth controller coupled to the first amplifier, configured to control the frequency response characteristics of the amplification of the first amplifier to produce a first amplified electric signal, a driver circuit configured to receive a second electric signal and to produce a second amplified electric signal in response to the second electric signal and an optical feedback signal, an electrical-to-optical converter coupled to the micro-controller and configured to convert the second amplified electrical signal to a second optical signal, and a photo diode configured to detect the second optical signal and to produce the optical feedback signal to be received by the driver circuit.

Abstract: A system for measuring gains of a plurality of photo diodes includes a chamber adapted to host the plurality of photo diodes and a temperature control unit configured to control the temperature within the chamber to a predetermined temperature. A control unit selects at least one of the plurality of photo diodes. A hosting unit is configured to provide a bias voltage to the selected photo diode at the predetermined temperature. A light source transmits photo signals to the selected photo diode at the predetermined temperature. A measurement unit configured to measure current signals generated by the selected photo diode in response to the photo signals under the bias voltage at the predetermined temperature.

Abstract: An optical transceiver includes a multi-layer printed circuit board comprising a plurality of layers and a first electric circuit and a flexible printed circuit board comprising a second electric circuit in connection with the first electric circuit. At least one of the layers is a rigid printed circuit board layer. A flexible printed circuit board is an extension of one of the layers in the multi-layer printed circuit board. An electro-optical component in communication with the first electric circuit and the second electric circuit can convert an electric signal to an optical signal or an optical signal to an electric signal.