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11. 发明申请

US20180254756A1 OPTICAL RECEIVER 审中-公开
公开(公告)号：US20180254756A1
公开(公告)日：2018-09-06
申请号：US15758414
申请日：2016-09-13
申请人： FIRECOMMS LIMITED
发明人： Patrick MURPHY , Colm DONOVAN , Ciaran CAHILL
IPC分类号： H03F3/08 , H03F3/45 , H03G3/30 , H04B10/69
CPC分类号： H03F3/087 , H03F3/08 , H03F3/45 , H03F3/45071 , H03F2200/267 , H03F2200/375 , H03F2200/435 , H03F2203/45151 , H03F2203/45681 , H03G3/3052 , H03H11/12 , H04B10/6931 , H04B10/697
摘要： A receiver has a differential transimpedance amplifier (4) with two inputs and two outputs. The differential transimpedance amplifier (4) provides a differential output and this is peak-detected (15, 16) to provide amplitude reference signals. The differential transimpedance amplifier output and the amplitude reference signals are fed to a differential summing amplifier (10), which provides a fully differential signal to a comparator, or to an automatic gain control circuit (5) to regulate the differential transimpedance amplifier gain. The differential summing amplifier (10) output is a fully differential signal, thereby having lower distortion for DC and burst mode receiver applications.

12. 发明申请

US20100021112A1 Optical connector 有权
标题翻译：光连接器
公开(公告)号：US20100021112A1
公开(公告)日：2010-01-28
申请号：US12585100
申请日：2009-09-03
申请人： Thomas Moriarty , Patrick Doyle
发明人： Thomas Moriarty , Patrick Doyle
IPC分类号： G02B6/36 , G02B6/00
CPC分类号： G02B6/4201 , G02B6/3801 , G02B6/3855 , G02B6/4256 , G02B6/4277 , G02B6/4292
摘要： An optical connector includes four main components, namely a clamp; a housing into which the clamp slides; two optical elements, a transmitter and a receiver; and an EMI metal shield surrounding the elements. The clamp has two parallel through holes for receiving fibre terminations, each through-hole having a generally conical mouth for convenient guidance of a fibre termination. Inside of the through-holes there are side resilient clamp members, and there is a single central clamp member. The clamp is of moulded plastics construction, and the clamp members are resilient in the lateral plane. The central clamp member on the other hand has little flexibility and remains essentially static throughout the clamping operation. Each resilient clamping member has a tooth at its end for snap-fitting engagement with the housing at open and closed positions. Fibre terminations are inserted through the clamp mouths and the through-holes and into the sockets of the housing. The clamp is then simply pushed inwardly so that teeth in the socket walls bite into the fibre claddings.
摘要翻译：光连接器包括四个主要部件，即夹具; 夹具滑入其中的壳体; 两个光学元件，发射器和接收器; 以及围绕元件的EMI金属屏蔽。夹具具有两个用于接收光纤端接的平行通孔，每个通孔具有大致圆锥形的口，用于方便引导光纤端接。在通孔内部有侧面的弹性夹紧构件，并且存在单个中心夹紧构件。夹具是模制塑料结构，并且夹紧构件在侧面具有弹性。另一方面，中心夹紧构件在整个夹紧操作中具有很小的灵活性并且基本上保持静止。每个弹性夹紧构件在其端部具有齿，用于在打开和关闭位置处与壳体卡扣配合接合。光纤终端通过夹钳口和通孔插入壳体的插座中。然后将夹具简单地向内推，使得插座壁中的齿咬入纤维包层。

13. 发明申请

US20200235823A1 OPTICAL RECEIVER WITH A CASCODE FRONT END 审中-公开
公开(公告)号：US20200235823A1
公开(公告)日：2020-07-23
申请号：US15758847
申请日：2016-09-13
申请人： FIRECOMMS LIMITED
发明人： Patrick MURPHY , Colm DONOVAN , Ciaran CAHILL
IPC分类号： H04B10/69
摘要： An optical receiver (1) comprises a differential TIA (4) linked with a photodiode (2, 3) providing a current sense signal (Isig_tia). The receiver is configured to provide to the TIA a sense signal as a sense TIA input (Isig_tia) and a second input (Idark_tia) which is a proportion of the maximum sense signal. The proportion input is half of said maximum sense signal. The inputs to the TIA are via cascode circuits (5, 6), thereby providing the advantages of a low input impedance for large area photodiodes at the TIA input, while creating a fully differential signal at the output, and the reduction of TIA bandwidth in burst mode applications, which filters out high frequency noise.

14. 发明授权

US10218322B2 Transconductance current source 有权
公开(公告)号：US10218322B2
公开(公告)日：2019-02-26
申请号：US15759404
申请日：2016-09-13
申请人： FIRECOMMS LIMITED
发明人： Patrick Murphy , Colm Donovan , Ciaran Cahill
IPC分类号： H04B1/38 , H03F3/345 , H03F1/22 , H03F1/32 , H03F3/08 , H03F3/50
摘要： 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.

15. 发明申请

US20180254771A1 VOLTAGE COMPARATOR 审中-公开
公开(公告)号：US20180254771A1
公开(公告)日：2018-09-06
申请号：US15760137
申请日：2016-09-13
申请人： FIRECOMMS LIMITED
发明人： Colm DONOVAN , Ciaran CAHILL , Patrick MURPHY
IPC分类号： H03K3/0233 , H03F3/16
CPC分类号： H03K3/02337 , H03F3/16 , H03F2200/135 , H03K5/2481
摘要： A voltage comparator (1) has a high switching speed and simplicity of design. It minimizes pulse-width distortion of input digital signals when functioning as a digital input buffer in high speed communications applications. In addition it provides a simple hysteresis circuit (31) that is easily tuneable with a reference current. The hysteresis circuit (31) is dependent on a reference current. This current may be chosen to have a proportionality to temperature, supply, or another selectable parameter, and may be programmable, in order to create the desired hysteresis performance.

16. 发明授权

US07927023B2 Optical fibre connector 有权
标题翻译：光纤连接器
公开(公告)号：US07927023B2
公开(公告)日：2011-04-19
申请号：US12734115
申请日：2008-10-13
申请人： Thomas Moriarty , John Douglas Lambkin
发明人： Thomas Moriarty , John Douglas Lambkin
IPC分类号： G02B6/36 , G02B6/38 , G02B6/00
CPC分类号： G02B6/4292 , G02B6/3809 , G02B6/3849 , G02B6/3887 , G02B6/4219
摘要： A connector receives and grips an optical fiber in registry with an optical element. Pivoting portions are held in default inoperative position by the spring action of molded hinges, at which position two shutter portions meet, so forming a shutter preventing the ingress of dirt to the optical element. As the optical liber is pushed a small distance into the connector, the pivoting portions are caused to pivot a small amount about the hinges, bringing teeth into contact with the outside jacket of the fiber. The bodies of the inserts are forced radially away from the central axis of the connector, so providing a leaf spring force which keeps the teeth engaged with the jacket of the fiber. The shutter portions move out of the way of the fiber and the spring action applies a force to draw the fiber further into the body of the connector.
摘要翻译：连接器接收并夹持光纤与光学元件对齐。枢转部分通过模制铰链的弹簧作用保持在默认的不起作用的位置，在两个闸板部分相交的位置处，从而形成防止灰尘进入光学元件的挡板。当光学释放器被推入连接器的一小段距离时，枢转部分绕铰链转动一小部分，使得齿与纤维的外套相接触。插入件的主体被强制地径向远离连接器的中心轴线，从而提供一个板簧力，该弹簧力保持齿与纤维的护套接合。快门部分离开光纤的方式移动，并且弹簧动作施加力以将光纤进一步拉入连接器的主体。

17. 发明授权

US07597485B2 Optical connector 有权
标题翻译：光连接器
公开(公告)号：US07597485B2
公开(公告)日：2009-10-06
申请号：US11812719
申请日：2007-06-21
申请人： Thomas Moriarty , Patrick Doyle
发明人： Thomas Moriarty , Patrick Doyle
IPC分类号： G02B6/36
CPC分类号： G02B6/4201 , G02B6/3801 , G02B6/3855 , G02B6/4256 , G02B6/4277 , G02B6/4292
摘要： An optical connector includes four main components, namely a clamp; a housing into which the clamp slides; two optical elements, a transmitter and a receiver; and an EMI metal shield surrounding the elements. The clamp has two parallel through holes for receiving fiber terminations, each through-hole having a generally conical mouth for convenient guidance of a fiber termination. Inside of the through-holes there are side resilient clamp members, and there is a single central clamp member. The clamp is of moulded plastics construction, and the clamp members are resilient in the lateral plane. The central clamp member on the other hand has little flexibility and remains essentially static throughout the clamping operation. Each resilient clamping member has a tooth at its end for snap-fitting engagement with the housing at open and closed positions. Fiber terminations are inserted through the clamp mouths and the through-holes and into the sockets of the housing. The clamp is then simply pushed inwardly so that teeth in the socket walls bite into the fiber claddings.
摘要翻译：光连接器包括四个主要部件，即夹具; 夹具滑入其中的壳体; 两个光学元件，发射器和接收器; 以及围绕元件的EMI金属屏蔽。夹具具有两个用于接收光纤端接的平行通孔，每个通孔具有大致圆锥形的口，用于方便引导光纤端接。在通孔内部有侧面的弹性夹紧构件，并且存在单个中心夹紧构件。夹具是模制塑料结构，并且夹紧构件在侧面具有弹性。另一方面，中心夹紧构件在整个夹紧操作中具有很小的灵活性并且基本上保持静止。每个弹性夹紧构件在其端部具有齿，用于在打开和关闭位置处与壳体卡扣配合接合。光纤终端通过夹钳口和通孔插入壳体的插座中。然后将夹具简单地向内推，使得插座壁中的齿咬入纤维包层。

18. 发明申请

US20090161713A1 SURFACE EMITTING OPTICAL DEVICES 审中-公开
标题翻译：表面发射光学器件
公开(公告)号：US20090161713A1
公开(公告)日：2009-06-25
申请号：US11916962
申请日：2006-06-02
申请人： Geoffrey Duggan , John Douglas Lambkin
发明人： Geoffrey Duggan , John Douglas Lambkin
IPC分类号： H01S5/00
CPC分类号： H01S5/18394 , B82Y20/00 , H01L33/105 , H01S5/18311 , H01S5/18327 , H01S5/18391 , H01S5/34326 , H01S2301/166 , H01S2302/00
摘要： A visible wavelength vertical cavity surface emitting laser suitable for single mode operation has an oxide aperture (81, 82) for concentrating electrical current within a central axial portion (143) of the device and a surface relief feature (144, 146) at an output surface of the device selecting for substantially single lateral mode of operation. The relationship between oxide confinement structure diameter (140) and surface relief feature diameter (141) has been mapped to provide optimum conditions for single mode behaviour and define a region of that space to produce optimum device performance in the visible device operating wavelength band between 630 nm and 690 nm.
摘要翻译：适用于单模操作的可见波长垂直腔表面发射激光器具有用于将电流集中在装置的中心轴向部分（143）内的氧化物孔（81,82）和在输出端处的表面起伏特征（144,146）该装置的表面选择基本上单一横向操作模式。氧化物限制结构直径（140）和表面起伏特征直径（141）之间的关系已经被映射以提供单模行为的最佳条件，并且定义该空间的区域以在630的可见设备工作波长带中产生最佳设备性能 nm和690nm。

19. 发明授权

US07153039B2 Connection of optical waveguides to optical devices 有权
标题翻译：将光波导连接到光学器件
公开(公告)号：US07153039B2
公开(公告)日：2006-12-26
申请号：US11109674
申请日：2005-04-20
申请人： Brian McGarvey , Thomas Moriarty
发明人： Brian McGarvey , Thomas Moriarty
IPC分类号： G02B6/36
CPC分类号： G02B6/4239 , G02B6/4201 , G02B6/4212 , G02B6/423 , G02B6/4253 , G02B6/4255 , G02B6/4292
摘要： An optical assembly has a socket for receiving a fiber termination ferrule. A PIN diode is on a lead frame encapsulated in a transparent body. As a fiber ferrule is pushed into the socket the electronic output from the diode is monitored to determine optimum insertion distance.
摘要翻译：光学组件具有用于容纳光纤终端套圈的插座。 PIN二极管位于封装在透明体中的引线框架上。当光纤套圈被推入插座时，监控来自二极管的电子输出以确定最佳插入距离。

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