Abstract: Disclosed is an optical module including an optical transmitter which is configured to output a first optical signal, an optical receiver which is configured to receive a second optical signal, a holder which is configured to include an optical fiber on which the first optical signal is incident and from which the second optical signal is emitted. The optical module further includes a first optical filter disposed between the optical transmitter and the holder to transmit the first optical signal and reflect the second optical signal, a first parallel light lens disposed between the first optical filter and the optical transmitter, and a second parallel light lens disposed between the first optical filter and the holder.

Abstract: Disclosed is an optical module including an optical transmitter which is configured to output a first optical signal, an optical receiver which is configured to receive a second optical signal, a holder which is configured to include an optical fiber on which the first optical signal is incident and from which the second optical signal is emitted. The optical module further includes a first optical filter disposed between the optical transmitter and the holder to transmit the first optical signal and reflect the second optical signal, a first parallel light lens disposed between the first optical filter and the optical transmitter, and a second parallel light lens disposed between the first optical filter and the holder.

Abstract: A radiator for improving beam pointing error and beam tracking error using a dielectric member and an antenna including the same are disclosed. The radiator includes a first dipole member, a second dipole member adjacent to the first dipole member, a third dipole member facing to the first dipole member, and a fourth dipole member facing to the second dipole member. Here, the first to fourth dipole members have square shape, and a dielectric member is connected to at least one of the first to fourth dipole members.

Abstract: Disclosed herein is a single wavelength bi-directional optical transceiver for transmitting/receiving optical signals having the same wavelength through an optical communication system. The optical transceiver includes a transmitter including an isolator and converting an external input signal into an optical transmit signal, an optical filter reflecting some of the optical transmit signal and transmitting the other of the optical transmit signal, an optical fiber transmitting the optical transmit signal transmitted by the optical filter to a counterpart optical transceiver, a receiver receiving an optical receive signal from the counterpart optical transceiver via the optical fiber, and a body enclosing a portion of the transmitter, the optical filter, a portion of the optical fiber and a portion of the receiver.

Abstract: Disclosed herein is a single wavelength bi-directional optical transceiver for transmitting/receiving optical signals having the same wavelength through an optical communication system. The optical transceiver includes a transmitter including an isolator and converting an external input signal into an optical transmit signal, an optical filter reflecting some of the optical transmit signal and transmitting the other of the optical transmit signal, an optical fiber transmitting the optical transmit signal transmitted by the optical filter to a counterpart optical transceiver, a receiver receiving an optical receive signal from the counterpart optical transceiver via the optical fiber, and a body enclosing a portion of the transmitter, the optical filter, a portion of the optical fiber and a portion of the receiver.

Abstract: Disclosed herein is a bi-directional optical sub-assembly structured to reduce reflection noise. The bi-directional optical sub-assembly includes an optical fiber; a transmitter transmitting an optical transmit signal having passed through a 45° filter to the outside through the optical fiber, a receiver receiving an optical receive signal which is received from the outside through the optical fiber, is reflected by the 45° filter and passes through a 0° filter; a body encompassing a part of the optical fiber, a part of the transmitter and a part of the receiver; a cap housing encompassing a part of the transmitter and including an opening to provide a passage for the optical transmit signal from the transmitter to the optical fiber, and a filter holder having the 45° filter and the 0° filter attached thereon within the body.

Abstract: A radiator for improving beam pointing error and beam tracking error using a dielectric member and an antenna including the same are disclosed. The radiator includes a first dipole member, a second dipole member adjacent to the first dipole member, a third dipole member facing to the first dipole member, and a fourth dipole member facing to the second dipole member. Here, the first to fourth dipole members have square shape, and a dielectric member is connected to at least one of the first to fourth dipole members.