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公开(公告)号：US11323183B1
公开(公告)日：2022-05-03
申请号：US16949592
申请日：2020-11-05
发明人： Tsung Ching Huang , Jinsung Youn
摘要： Examples described herein relate to an analog front-end (AFE). The AFE includes a trans-impedance amplifier to receive an input current and generate a pair of the differential voltage signals based on the input current and a reference current. Further, the AFE includes a dynamic voltage slicer to receive the differential voltage signals at input terminals and supply digital voltages at output terminals. The dynamic voltage slicer includes a preamplifier to generate a pair of intermediate voltages based on the differential voltage signals sampled at a predetermined frequency. The dynamic voltage slicer also includes a voltage latch circuit coupled to the preamplifier, wherein the voltage latch circuit is to regenerate a pair of digital voltages based on the pair of the intermediate voltages. Moreover, the AFE includes a logic latch coupled to the dynamic voltage slicer to provide digital output states based on the pair of the digital voltages.
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公开(公告)号：US11115130B1
公开(公告)日：2021-09-07
申请号：US16925202
申请日：2020-07-09
IPC分类号： H04J14/02 , H04B10/69 , H04B10/079 , H03M1/66 , H03M1/12
摘要： Techniques and circuitry for wavelength monitor and control are disclosed herein. The disclosed wavelength monitor and control circuitry and techniques are designed to realize a multi-channel DWDM optical link by using a photonic receiver that dynamically adjusts resonant wavelengths of the microring drop filter (MDF), as needed. The wavelength monitor and control circuitry can monitor and control the resonant wavelengths of multiple MDFs for a DWDM silicon photonics receiver with minimum power and area overhead. In an embodiment, circuitry for an optical receiver comprises an MDF having resonant wavelength for multiple DWDM channels, and circuitry to control and monitor the resonant wavelength of the MDF in real-time and in manner that compensates for deviation between actual resonant wavelength of the MDF and the incident optical wavelength of the MDF.
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公开(公告)号：US20230030875A1
公开(公告)日：2023-02-02
申请号：US17443862
申请日：2021-07-28
发明人： Jinsung Youn , Peng Sun , Mudit Jain
摘要： Examples disclosed herein relate to photodetector (PD) behavior modeling for process design kit. In some examples, a photodetector behavior model may receive input optical data. Further, the photodetector behavior model may be provided with input values corresponding to input parameters. The photodetector behavior model may identify a set of coefficients from a set of coefficient lookup tables, based on the input values corresponding to input parameters. The photodetector behavior model determines characteristics of one or more model parameters of the photodetector based on the identified set of coefficients. The behavior model determines an output metric indicative of an electrical response of the photodetector, based on the input optical data and the determined characteristics of the one or more model parameters.
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公开(公告)号：US20220140914A1
公开(公告)日：2022-05-05
申请号：US16949592
申请日：2020-11-05
发明人： Tsung Ching Huang , Jinsung Youn
摘要： Examples described herein relate to an analog front-end (AFE). The AFE includes a trans-impedance amplifier to receive an input current and generate a pair of the differential voltage signals based on the input current and a reference current. Further, the AFE includes a dynamic voltage slicer to receive the differential voltage signals at input terminals and supply digital voltages at output terminals. The dynamic voltage slicer includes a preamplifier to generate a pair of intermediate voltages based on the differential voltage signals sampled at a predetermined frequency. The dynamic voltage slicer also includes a voltage latch circuit coupled to the preamplifier, wherein the voltage latch circuit is to regenerate a pair of digital voltages based on the pair of the intermediate voltages. Moreover, the AFE includes a logic latch coupled to the dynamic voltage slicer to provide digital output states based on the pair of the digital voltages.
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公开(公告)号：US20220138371A1
公开(公告)日：2022-05-05
申请号：US17084600
申请日：2020-10-29
发明人： Jinsung Youn , Xiaoge Zeng , Mir Ashkan Seyedi
IPC分类号： G06F30/20 , G06F16/901
摘要： A method for simulating a photodetector behavior includes: receiving an input waveform for an photodetector; receiving an input optical power and a reverse bias voltage for the photodetector; searching for, in a lookup-table library, model parameters for a photodetector behavior model based on the input optical power and the reverse bias voltage; and outputting a second waveform from the photodetector behavior model, where the second waveform is indicative of an electrical response of the photodetector receiving the input waveform.
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公开(公告)号：US11177219B1
公开(公告)日：2021-11-16
申请号：US16948397
申请日：2020-09-16
发明人： Jinsung Youn , Mir Ashkan Seyedi
IPC分类号： H01L23/538 , H04B10/40 , H04B10/25 , H04J14/02 , H01L23/498
摘要： Examples include a photonic device including a photonic integrated circuit (PIC), an optical transceiver (OTRx) front-end circuitry integrated with the PIC, an electronic integrated circuit (EIC) and an interposer. The PIC and the EIC are disposed on the interposer. The EIC is electrically interconnected to the OTRx front-end circuitry in the PIC. Some examples include a method of fabricating a photonic device.
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