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公开(公告)号：US11215773B1
公开(公告)日：2022-01-04
申请号：US16900926
申请日：2020-06-14
发明人： Casper Dietrich , Henning Lysdal
IPC分类号： G02B6/42
摘要： A laser module includes one or more connectors and a laser source. The one or more connectors are configured to receive electrical power from, and to output a light beam to, a panel of a system. The laser source is configured to (i) be powered by the electrical power, and (ii) produce the light beam using the electrical power. The one or more connectors and the laser source are detachable from the panel, and when detached from the panel, the laser source is not powered by the electrical power.
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2.发明申请公开(公告)号：US20200145111A1
公开(公告)日：2020-05-07
申请号：US16182964
申请日：2018-11-07
IPC分类号： H04B10/54 , H04B10/524 , H04B10/58 , H01S5/42
摘要： Embodiments are disclosed for generating a lookup table value for calibrating a lookup table circuit in an optical transmitter. The example method includes generating a calibration signal. The calibration signal encodes a plurality of bits in a number of amplitude levels. The example method further includes transmitting the calibration signal to a module under calibration and transmitting a symbol sequence of defined length to a reference module. The reference module compares the symbol sequence with a distorted signal received from the module under calibration to generate a set of condition count statistics. The example method further includes receiving the set of condition count statistics from the receiver in the reference module and calculating a lookup table value based on the set of condition count statistics. The example method further includes transmitting the lookup table value to a transmitter associated with the module under calibration.
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公开(公告)号：US20180342853A1
公开(公告)日：2018-11-29
申请号：US15602232
申请日：2017-05-23
发明人： Søren Balslev
摘要： Assemblies and methods are described that provide for monitoring output from light emitting sources, such as vertical-cavity surface-emitting lasers. In particular, the assembly includes an array of light emitting sources, an array of lenses, an array of photodiodes, and a controller. The light is emitted by the array of light emitting sources, which in turn is configured to emit light towards the array of lenses. A photo-induced current is generated at the array of photodiodes, which is arranged to receive light reflected off of the array of lenses. The assembly determines a change in operational status of one or more of the light emitting sources based on the photo-induced currents.
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公开(公告)号：US09991965B2
公开(公告)日：2018-06-05
申请号：US14884110
申请日：2015-10-15
CPC分类号： H04B10/505 , G02F1/0121 , G02F2001/0155 , G02F2001/0157
摘要： A modulator driver circuit for providing a drive voltage to an electro-absorption modulator, such a Franz-Keldysh modulator, or to a micro-ring modulator, and an optical transmitter including such driver circuit, where said driver circuit includes a differential amplifier and at least one differential branch of the differential amplifier being provided with a voltage offset. This provides for a bias voltage being adjustable within the driver circuit itself. Preferably, the differential amplifier is arranged for supplying drive voltage to two complementary driver outputs providing a reverse bias relative to the modulator. In one embodiment, the differential amplifier includes a cascode in the differential branch not being provided with the voltage offset.
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公开(公告)号：US11749963B2
公开(公告)日：2023-09-05
申请号：US16846636
申请日：2020-04-13
发明人： Juan Jose Vegas Olmos , Roy Naveh , Elad Mentovich
CPC分类号： H01S5/0427 , H01S5/0261 , H01S5/0617 , H01S5/183
摘要： Embodiments are disclosed for driving a vertical cavity surface emitting laser (VCSEL). An example method includes injecting, via a universal driver, a direct current (DC) bias current to a VCSEL. The VCSEL is configured to convert the modulated signal into an optical signal encoding one or more bits. The example method further includes providing a modulated signal to the VCSEL. The modulated signal encodes a digital sequence comprising the one or more bits using a modulation method.
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6.发明申请公开(公告)号：US20190214378A1
公开(公告)日：2019-07-11
申请号：US15864545
申请日：2018-01-08
IPC分类号： H01L27/02 , H01L21/66 , H01L23/00 , H01L23/528 , H01L23/66 , H02H9/04 , G01R31/00 , G01R31/28
摘要： A circuit providing electrostatic discharge (ESD) protection and a method and an apparatus for testing ESD protection on an integrated circuit are described. The circuit includes a first ESD protection circuit and a test pad and a second ESD protection circuit and a second pad for the application, not probed during manufacturing of the integrated circuit. In some examples, the method includes providing a first, second, third, and fourth test current to the circuit providing ESD protection, measuring a first second, third, and fourth voltage drop across the circuit, and determining an operating condition for the first ESD protection circuit and the test pad and the second ESD protection circuit and the second bond pad based on expected values of the first voltage drop, the second voltage drop, the third voltage drop, and the fourth voltage drop.
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公开(公告)号：US20170111118A1
公开(公告)日：2017-04-20
申请号：US15297457
申请日：2016-10-19
IPC分类号： H04B10/50 , H04B10/25 , H04B10/564
CPC分类号： H04B10/541
摘要： The invention comprises a multilevel optical signal system comprising two or more light source branches and an optical power-combiner, wherein each branch comprising a light source, an optical modulator and an electrical driver for the modulator, wherein each electrical driver is configured for being driven by electrical signals to drive the modulator to modulate the light generated by the light source into a corresponding 2-level data signalsuch that the respective 2-level data signals differs in power level.
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公开(公告)号：US20210320475A1
公开(公告)日：2021-10-14
申请号：US16846636
申请日：2020-04-13
发明人： Juan Jose Vegas Olmos , Roy Naveh , Elad Mentovich
IPC分类号： H01S5/042
摘要： Embodiments are disclosed for driving a vertical cavity surface emitting laser (VCSEL). An example method includes injecting, via a universal driver, a direct current (DC) bias current to a VCSEL. The VCSEL is configured to convert the modulated signal into an optical signal encoding one or more bits. The example method further includes providing a modulated signal to the VCSEL. The modulated signal encodes a digital sequence comprising the one or more bits using a modulation method.
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公开(公告)号：US11070214B1
公开(公告)日：2021-07-20
申请号：US17069894
申请日：2020-10-14
发明人： Thorkild Franck , Ulrik S. Wismar , Ran Sela
摘要： An Integrated Circuit (IC) includes a digital phase-locked loop (DPLL) circuit and DPLL Diagnostics circuitry (DPLL-DC). The DPLL circuit includes an oscillator, a digital phase detector and a digital feedback bus (DPLL-DFB). The oscillator is configured to generate an output signal. The digital phase detector is configured to generate a digital feedback signal indicative of a phase difference between the output signal and a reference input signal. The DPLL-DFB is configured to feed-back the digital feedback signal for controlling the oscillator. The DPLL-DC is coupled to the DPLL-DFB and is configured to monitor events depending at least on the digital feedback signal transferred on the DPLL-DFB.
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10.发明授权公开(公告)号：US10547387B2
公开(公告)日：2020-01-28
申请号：US15942043
申请日：2018-03-30
IPC分类号： H04B10/50 , H04B10/588 , H04B10/54 , G11B5/09
摘要： Embodiments are disclosed for equalizing input signals for communication systems. An example method includes receiving an input signal. The input signal encodes a plurality of bits in a number of amplitude levels. The example method further includes converting the input signal to an equalized output signal using a plurality of lookup table circuits. The equalized output signal encodes a plurality of symbols in a number of amplitude levels. The example method further includes feeding the equalized output signal to an output driver circuit.
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