An optical module 1 according to an embodiment includes a plurality of laser diodes (LDs) 21 to 23, a multiplexing optical system 30 combining a plurality of laser beams from the respective plurality of LDs, and a package 10 accommodating the plurality of LDs and the multiplexing optical system. The package includes a support mounted with the multiplexing optical system, and a cap having a transmissive window that allows a resultant light beam to pass through. At least one of the LDs has an oscillation wavelength of nor more than 550 nm. The package has an internal moisture content of not more than 3000 ppm. The multiplexing optical system is fixed to the support by a resin curing adhesive.

An optical module and a method of assembling the optical module are disclosed. The optical module comprises a laser unit, a modulator unit, and a detector unit mounted on respective thermo-electric coolers (TECs). The modulator unit, which is arranged on an optical axis of the first output port from which a modulated beam is output, modulates the continuous wave (CW) beam output from the laser unit. On the other hand, the laser unit and the detector unit are arranged on another optical axis of the second output port from which another CW beam is output. The method of assembling the optical module first aligns one of the first combination of the laser unit and the modulator unit with the first output port and the second combination of the laser unit and the detector unit, and then aligns another of the first combination and the second combination.

A receptacle-collimator assembly and a multi-wavelength optical receiver module. The receptacle-collimator assembly includes a receptacle configured to receive a wavelength-multiplexed optical signal; and a collimator integrated with the receptacle and configured to generate a collimated beam signal from a multi-wavelength optical signal received from the receptacle and output the beam signal.

An optical module 1 according to an embodiment includes a plurality of laser diodes (LDs) 21 to 23, a multiplexing optical system 30 combining a plurality of laser beams from the respective plurality of LDs, and a package 10 accommodating the plurality of LDs and the multiplexing optical system. The package includes a support mounted with the plurality of LDs and the multiplexing optical system, and a cap having a transmissive window that allows a resultant light beam to pass through. At least one of the LDs has an oscillation wavelength of nor more than 550 nm. The package has an internal moisture content of not more than 3000 ppm. The multiplexing optical system is fixed to the support by a resin curing adhesive.

An optical module includes: a butterfly-type optical device including a body that contains a heating element in an interior space, a lid body that puts a lid on the interior space, and a plurality of pins; a substrate including a connecting surface to which the plurality of pins are connected; and a heat-dissipating component arranged to the connecting surface side, wherein the optical device is connected to the connecting surface with a heat-dissipating surface, of a part that has been arranged with the heating element, oriented to the heat-dissipating component side, and with a gap provided to a side of the lid body opposite to a side of the interior space.

An optical module and a method of assembling the optical module are disclosed. The optical module comprises a laser unit, a modulator unit, and a detector unit mounted on respective thermo-electric coolers (TECs). The modulator unit, which is arranged on an optical axis of the first output port from which a modulated beam is output, modulates the continuous wave (CW) beam output from the laser unit. On the other hand, the laser unit and the detector unit are arranged on another optical axis of the second output port from which another CW beam is output. The method of assembling the optical module first aligns one of the first combination of the laser unit and the modulator unit with the first output port and the second combination of the laser unit and the detector unit, and then aligns another of the first combination and the second combination.

An optical module 1 according to an embodiment includes a plurality of laser diodes (LDs) 21 to 23, a multiplexing optical system 30 combining a plurality of laser beams from the respective plurality of LDs, and a package 10 accommodating the plurality of LDs and the multiplexing optical system. The package includes a support mounted with the plurality of LDs and the multiplexing optical system, and a cap having a transmissive window that allows a resultant light beam to pass through. At least one of the LDs has an oscillation wavelength of nor more than 550 nm. The package has an internal moisture content of not more than 3000 ppm. The multiplexing optical system is fixed to the support by a resin curing adhesive.

A hermetically sealable package may be formed from a top portion and a bottom portion mated along a seam at or near a plane of an optical fiber. A completed pill assembly may be positioned directly into the enclosure base without requiring the fiber to be threaded through the feed through or snout. The top potion may then be mated with the bottom portion to form the package. A glass solder ring may be placed coaxial with the fiber in the feed through. The seam may be sealed by laser welding and the glass solder ring reflowed by laser heating, for example, with a same laser as used to weld the seam or by resistive or induction heating.

In a sealing structure of optical communication module using a sealing material, it has been difficult to secure the reliability without influencing optical fiber characteristics. A sealing structure of optical communication module of the present invention comprises: a cylindrical barrel unit fixed to a package; a cylindrical flange which is disposed inside the barrel unit and through which an optical fiber pierces; and a sealing material disposed between the barrel unit and the flange, wherein the flange has on its surface a plurality of regions having different surface conditions, and the sealing material is disposed in only one of the regions.

A receptacle-collimator assembly and a multi-wavelength optical receiver module. The receptacle-collimator assembly includes a receptacle configured to receive a wavelength-multiplexed optical signal; and a collimator integrated with the receptacle and configured to generate a collimated beam signal from a multi-wavelength optical signal received from the receptacle and output the beam signal.