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    A TRANSCONDUCTANCE CURRENT SOURCE
    3.
    发明公开
    A TRANSCONDUCTANCE CURRENT SOURCE 审中-公开

    公开(公告)号：EP3350920A1

    公开(公告)日：2018-07-25

    申请号：EP16763849.3

    申请日：2016-09-13

    Applicant: Firecomms Limited

    Inventor： MURPHY, Patrick ,  DONOVAN, Colm ,  CAHILL, Ciaran

    IPC: H03F3/345 ,  H03F3/08 ,  H03F3/50 ,  H03F1/22 ,  H03F1/32

    Abstract: A transconductance circuit has an input terminal (VIN) and an output terminal (Out), a first current source (4) having a gate connected to said input terminal (VIN); and a second current source (5), in parallel with said first current source, and having a higher transconductance and a wider dynamic range than the first current source. The current sources are configured so that at a low input voltage only the first current source (4) is on. A voltage drop circuit provides a lower bias voltage for the second current source than for the first current source.

    GLITCH COMPENSATION IN ELECTRONIC CIRCUITS
    4.
    发明公开
    GLITCH COMPENSATION IN ELECTRONIC CIRCUITS 审中-公开

    公开(公告)号：EP3350927A1

    公开(公告)日：2018-07-25

    申请号：EP16767202.1

    申请日：2016-09-13

    Applicant: Firecomms Limited

    Inventor： DONOVAN, Colm ,  CAHILL, Ciaran ,  MURPHY, Patrick

    IPC: H03K19/003

    CPC classification number: H03K19/00346 ,  H03K19/00369

    Abstract: A supply circuit for providing pulses of current has a current source (11), a reference voltage source (12) for controlling magnitude of the current, and a current switch (13) for controlling whether or not the current passes through a load. Also, there is a switch control signal terminal (15) for controlling the current switch, and glitch compensation elements including at least one capacitance circuit (32) and associated capacitor drive circuit (21) for feeding a variable correcting voltage back to the reference voltage,), and a controller (33) to control said variable voltage.

    AN OPTICAL FIBRE CONNECTOR
    6.
    发明授权
    AN OPTICAL FIBRE CONNECTOR 有权
    一个光纤连接器

    公开(公告)号：EP2201418B1

    公开(公告)日：2011-03-02

    申请号：EP08808005.6

    申请日：2008-10-13

    Applicant: Firecomms Limited

    Inventor： MORIARTY, Thomas ,  LAMBKIN, John, Douglas

    IPC: G02B6/36 ,  G02B6/38 ,  G02B6/42

    CPC classification number: G02B6/4292 ,  G02B6/3809 ,  G02B6/3849 ,  G02B6/3887 ,  G02B6/4219

    Abstract: A connector (50) receives and grips an optical fibre (F) in registry with an optical element (53). Pivoting portions (22, 32) are held in default inoperative position by the spring action of moulded hinges (21, 31), at which position two shutter portions (24, 34) meet, so forming a shutter preventing the ingress of dirt to the optical element. This is the default position when the connector is not being used. As the optical fibre (F) is pushed a small distance into the connector, the pivoting portions (22, 32) are caused to pivot a small amount about the hinges (21, 22), bringing teeth (23, 33) into contact with the outside jacket of the fibre (F).The bodies (20, 30) of the inserts are forced radially away from the central axis of the connector, so providing a leaf spring force which keeps the teeth (23, 33) engaged with the jacket of the fibre (F). The shutter portions (24, 34) move out of the way of the fibre (F) and the spring action applies a force to draw the fibre (F) further into the body of the connector (50).When the fibre (F) has been pushed home the bodies of the inserts (20, 30) have been able to relax partially in the radial direction towards their normal position, but continue to exert a spring force on the teeth (23, 33). This force acts both to keep the teeth engaged in the jacket of the fibre, and to push the fibre F firmly against the optical element (53), so that the fibre F is held in the connector (50) in the engaged position.

    Abstract translation: 连接器（50）接收并夹持与光学元件（53）配准的光纤（F）。 枢转部分（22,32）通过模制铰链（21,31）的弹簧作用保持在默认的非工作位置，在该位置两个活门部分（24,34）相遇，从而形成防止灰尘进入 光学元件。 这是连接器未被使用时的默认位置。 当光纤（F）被推入连接器一小段距离时，使枢转部分（22,32）围绕铰链（21,22）枢转少量，使齿（23,33）与 （F）的外部护套。插入物的主体（20,30）被径向地推离连接器的中心轴线，因此提供片簧弹力，其保持齿（23,33）与 纤维外套（F）。 遮光部分（24,34）移出光纤（F）的路径，并且弹簧作用施加力以将光纤（F）进一步拉入连接器（50）的主体中。当光纤（F） 已经被推回到插入件（20,30）的主体已经能够朝着其正常位置的径向部分地部分地松弛，但是继续对牙齿（23,33）施加弹簧力。 该力既用于保持啮合在光纤护套中的齿，又用于将光纤F牢固地推靠在光学元件（53）上，使得光纤F在连接器（50）中保持在啮合位置。

    A SURFACE MOUNTED OPTICAL DEVICE AND HYBRID CIRCUIT
    8.
    发明公开
    A SURFACE MOUNTED OPTICAL DEVICE AND HYBRID CIRCUIT 审中-公开

    公开(公告)号：EP4459340A1

    公开(公告)日：2024-11-06

    申请号：EP24168431.5

    申请日：2024-04-04

    Applicant: Firecomms Limited

    Inventor： STEPHEN, Martin ,  DAVIS, Áine ,  LAMBKIN, John

    IPC: G02B6/42 ,  G02B6/43 ,  H05K1/02

    Abstract: An electro optical apparatus has an EOCB (2) with a printed circuit board and at least one waveguide (3, 10), at least one optical aperture (20, 21, 114) in the board with a side wall aligned with a termination (116) of the waveguide. An electro optical device (30) has an optical element (31) with components (35) in encapsulation (36) on a substrate is located within the aperture (20) by the substrate (32/37) being attached to the board around a rim of the aperture by surface mount attachment with reflow of solder. The substrate may include an interposer (32) to allow design flexibility. The encapsulation (36) provides optical alignment of the component (35) with the EOCB waveguide so that the arrangement is robust, reliable and easy to manufacture. In some examples the substrate (501) and the EOCB (550) provide a Faraday cage (505, 554, 553) around the aperture and hence the optical element (530).

    AN OPTICAL FIBRE CONNECTOR
    10.
    发明授权
    AN OPTICAL FIBRE CONNECTOR 有权

    公开(公告)号：EP2721437B1

    公开(公告)日：2018-12-12

    申请号：EP12732715.3

    申请日：2012-06-14

    Applicant: Firecomms Limited

    Inventor： DOYLE, Patrick ,  MORIARTY, Thomas

    IPC: G02B6/38 ,  G02B6/42

    CPC classification number: G02B6/3858 ,  G02B6/4277 ,  G02B6/4292

    Abstract: A connector includes a main body, and a pair of sockets. Each socket includes a pair of opposed resilient walls in the overall configuration of a split tube. The connector also includes a transversely sliding clamp with two tapered slots, located so that one of the sockets passes through each slot. After fiber terminations are pushed into the sockets through the clamp slots, the clamp is slid in a plane across the socket axes so that the narrower ends of the slots engage the opposed split tube resilient walls of each socket. This squeezes each socket so that the opposed split tube resilient walls press against the associated fiber termination and retains it in place. The sockets may have guide slots for guiding clamp movement. The clamp moves in a translational movement, but in another example the clamp rotates in the lateral plane to squeeze the sockets.

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