Abstract: A heat dissipater assembly for an optical module for a telecommunications unit. The heat dissipater assembly includes a heat dissipater, a first connector portion coupled to the dissipater body and a second connector portion coupled to the dissipater body. The heat dissipater has a dissipater body including a recess for receiving the optical module, such that the optical module is in thermal communication with the dissipater body, and one or more heat dissipation structures configured to dissipate heat from the optical module into an environment around the heat dissipater. The optical connector is optically connected to the optical module received within the recess. The second connector portion is configured to be coupled to the telecommunications unit. The heat dissipater assembly further includes an electrical extender. The electrical extender is configured to be partially received within the heat dissipater.

Abstract: Embodiments described herein relate to methods and apparatuses for determining information associated with an optical component system in a network. A method for determining information associated with an optical component system in a network, wherein the optical component system includes a first optical path for transmission of a first optical signal, wherein the first optical path operates in an optical bandwidth that is different from a traffic optical bandwidth of a traffic optical path, includes: detecting at least one mechanically introduced optical loss in the transmitted first optical signal; and based on the detected at least one mechanically introduced optical loss, determining information associated with the optical component system.

Abstract: A padding unit comprising one or more fiber paddings is provided. Each of the one or more fiber paddings is for a respective one of one or more pairs of coupled channels in an optical device. At each pair of coupled channels, one channel in the pair of coupled channels is used as an upstream channel and the other channel in the pair of coupled channels is used as a downstream channel. Each fiber padding comprises a padding length of fiber configured to offset at least a part of a latency imbalance at the respective pair of coupled channels, the latency imbalance being a difference in latencies between the respective upstream and downstream channels caused by a difference in the multiplexing or demultiplexing path lengths of the respective upstream and downstream channels.

Abstract: An adaptor for an optical connector is provided. The optical connector defines first and second optical connector channels. The adaptor comprises a first part to couple to the optical connector and a second part comprising a connector portion for coupling to an optical device, in order to optically couple the first and second optical connector channels to the optical device. The first and second parts are movably coupled to one another and the first part is movable relative to the second part between first and second positions to selectively adjust a polarity of the connector portion.

Abstract: There is provided a security system for use at an enclosure containing one or more passive components of an optical communication link. The security system comprises a sensor configured to detect a physical breach of the enclosure, and an optical alert signal generator coupled to the optical communication link. The optical alert signal generator is self-powered, and configured to generate an optical alert signal and transmit the optical alert signal through the optical communication link when a physical breach of the enclosure is detected by the sensor. The optical alert signal is detectable at an entity external to the enclosure and connected to the optical communication link.

Abstract: An optical transceiver assembly is provided. The optical transceiver assembly comprises: an optical transceiver, wherein the optical transceiver comprises: an optical transmitter comprising an active region of a cavity laser for transmitting optical signals over a first channel of the optical transceiver; an optical receiver for receiving optical signals over a second channel of the optical transceiver; and an adaptor.

Abstract: A retaining device for retaining optical fibre cables is provided. The retaining device comprises a body member and a movable member, wherein the body member and movable member are configurable to define a plurality of channels configured to receive optical fibre cables, wherein the channels have a profile configured to restrain a longitudinal movement of the optical fibre cable received within them, wherein the movable member is selectively movable relative to the body member in order to adjust a dimension of the channels.

Abstract: A housing for optical transceivers is provided. The housing comprises a plurality of walls defining a plurality of spaces for receiving optical transceivers, e.g. pluggable optical transceivers. The housing defines a plurality of openings into the respective spaces. The housing further comprises a cover movably coupled to one of the walls, the cover movable relative to the one of the walls in order to cover one of the openings, when the space corresponding to the opening is vacant.

Abstract: There is provided a telecommunications network equipment unit, comprising a cooling system. The cooling system comprises an air input channel and an exhaust air output, wherein the exhaust air output is separate from the air input channel. The cooling system further comprises a plurality of air conduits. The plurality of air conduits is arranged such that heat can be transferred from respective ones of a plurality of devices in the telecommunications network equipment to air passing through respective ones of the plurality of air conduits. Each of the plurality of air conduits is arranged to receive a respective outflow of air from the air input channel and to direct said outflow of air therethrough to the exhaust air output. There is further provided telecommunications network equipment comprising one or more telecommunications network equipment units.

Abstract: An optical device mounting assembly is provided. The mounting assembly comprises: a base member for an optical device to be mounted on, wherein the base member comprises an opening formed in the base member such that the optical device at least partially overlaps the opening when mounted on the base member; and an optical fibre guide for an optical fibre extending from the optical device to be disposed about in order to support a length of the optical fibre on the mounting assembly, wherein the optical fibre guide is located at least partially within the opening in the base member.

Abstract: A sealing unit for a cabinet containing optical components. A gasket defines a plurality of apertures configured to provide a seal around a plurality of optical fiber cables, wherein the gasket has an interior side intended to face the interior of the cabinet and an exterior side intended to face an exterior of the cabinet. A first retaining device is located on the interior side of the gasket, and a second retaining device is located on the exterior side of the gasket. The first and second retaining devices each include a plurality of channels, wherein each channel is aligned with a respective aperture of the gasket and each channel is configured to receive one of the plurality of optical fiber cables. Each channel has a profile defined by a plurality of protruding surfaces configured to restrain longitudinal movement of an optical fiber cable received therein.

Abstract: An adaptor for mounting one or more substantially planar first electronic devices on a device rack is provided. The adaptor comprises a coupling portion for coupling to the device rack; and a mounting portion comprising one or more adaptor mounting points for mounting the first electronic devices on the adaptor. The mounting portion is movable relative to the coupling portion between a first position and a second position such that, when the adaptor is coupled to the device rack and the mounting portion is in the first position, the first electronic devices mounted on the adaptor are located within the device rack and are mounted on one or more planes which extend vertically and laterally relative to the device rack, and when the mounting portion is in the second position, the first electronic devices mounted on the adaptor are located at least partially outside of the device rack.

Abstract: An electronic circuit board including a plurality of electronic components mounted on the electronic circuit board and a plurality of electricity conductive paths for connecting the electronic components. The electronic circuit board further includes a plurality of electric connectors arranged in a bank along an edge of the electronic circuit board, wherein each one of the plurality of electric connectors is formed from the material of the board as a finger projecting outside the electronic circuit board. In line with either edge of each one of the electric connectors the electronic circuit board has a cut forming a gap and projecting into the board.

Abstract: In A system for mounting an electronic device on a device rack is provided. The device rack is for supporting a plurality of the electronic devices spaced along the rack in a first direction of the system. The system comprises: the electronic device; and a bracket for mounting the electronic device in a device rack, the bracket comprising: a first coupler configured to couple the bracket to the electronic device; a second coupler configured to couple the bracket to the device rack; and a bracket body comprising: a first arm extending between the first coupler and the second coupler; and a second arm extending between the first coupler and the second coupler, wherein the first arm and second arm are spaced apart to define an opening through which one or more cables and/or fibres connected to the electronic device can extend.

Abstract: Embodiments described herein relate to apparatuses for reducing the effect of oscillations of a heat sink. A heat sink apparatus is provided for use with an interface module comprising a cage configured to receive a pluggable signal connector, wherein the cage comprises a first surface configured to couple to a circuit board.

Abstract: There is provided an interface module (200), comprising: an interface (208) for connection with a signal connector (250); a cage (206) for guiding the signal connector towards the interface; and a heat sink (202). The cage (206) comprises a cage portion (212) that is configured to move from a first position to a second position upon insertion of the signal connector (250) into the cage. In the first position, the cage portion is not in thermal contact with the heat sink; when in the second position, the cage portion is in thermal contact with the heat sink. The cage portion (212) comprises one or more apertures (218).

Abstract: An optical add/drop device (100) comprising: a common port (102); an add port (106); a first wavelength selective optical filter (110) configured to: receive an optical signal at an add wavelength from the add port and transmit said optical signal at the add wavelength towards the common port; and receive optical signals from the common port and reflect optical signals not at the add wavelength; a second wavelength selective optical filter (114) configured to receive said optical signals from the common port reflected by the first wavelength selective optical filter and transmit an optical signal at a drop wavelength, different to the add wavelength; a drop port (116); and an optical waveguide (118) configured receive said optical signal at the drop wavelength transmitted by the second wavelength selective optical filter and route said optical signal to the drop port.

Abstract: A sealing unit (210) for cables extending into an enclosure comprising telecommunications equipment. The sealing unit (210) comprising a gasket (101) having an elongate section (110) of resilient material comprising a plurality of apertures (120), wherein each aperture is arranged to receive a cable (300). The elongate section (110) comprises slots (130) connecting the apertures to a lateral edge (150) of the elongate section. The apertures (120) are arranged in a two-dimensional array.

Abstract: There is provided a security system for use at an enclosure containing one or more passive components of an optical communication link. The security system comprises a sensor configured to detect a physical breach of the enclosure, and an optical alert signal generator coupled to the optical communication link. The optical alert signal generator is self-powered, and configured to generate an optical alert signal and transmit the optical alert signal through the optical communication link when a physical breach of the enclosure is detected by the sensor. The optical alert signal is detectable at an entity external to the enclosure and connected to the optical communication link.

Abstract: An electronic circuit board including a plurality of electronic components mounted on the electronic circuit board and a plurality of electricity conductive paths for connecting the electronic components. The electronic circuit board further includes a plurality of electric connectors arranged in a bank along an edge of the electronic circuit board, wherein each one of the plurality of electric connectors is formed from the material of the board as a finger projecting outside the electronic circuit board. In line with either edge of each one of the electric connectors the electronic circuit board has a cut forming a gap and projecting into the board.