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公开(公告)号：US11265627B1
公开(公告)日：2022-03-01
申请号：US16582902
申请日：2019-09-25
发明人： Roberto Proietti , Sung-Joo Ben Yoo
摘要： The disclosed system implements a bandwidth-reconfigurable optical interconnect, which couples optical signals between N interconnect inputs and N interconnect outputs. The system includes an arrayed waveguide grating router (AWGR), which provides cyclic, single-wavelength, all-to-all routing between N AWGR inputs and N AWGR outputs. The system also includes a wavelength-insensitive switch, which provides all-wavelength, all-to-all connectivity between N wavelength-insensitive inputs and N wavelength-insensitive outputs. The system additionally includes a wavelength-selective input switch, which selectively directs up to L wavelengths from each of the N interconnect inputs into a corresponding input of the wavelength-insensitive switch, wherein unselected wavelengths from each of the N interconnect inputs pass into a corresponding AWGR input. Finally, the system includes a wavelength-selective output switch, which selectively directs up to L wavelengths from each of the N wavelength-insensitive outputs into a corresponding interconnect output, wherein each of the N AWGR outputs pass into a corresponding interconnect output.
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公开(公告)号：US20190310433A1
公开(公告)日：2019-10-10
申请号：US16375667
申请日：2019-04-04
发明人： Sung-Joo Ben Yoo , Robert S. Patti
IPC分类号： G02B6/42 , H01L21/48 , H01L25/00 , H01L23/00 , H01L23/13 , H01L23/544 , H01L25/18 , H01L23/538
摘要： The disclosed embodiments provide a method for integrating an optical interposer with one or more electronic dies and an optical-electronic (OE) printed circuit board (PCB). This method involves first applying surface-connection elements to a surface of the optical interposer, and then bonding the one or more electrical dies to the optical interposer using the surface-connection elements. Next, the method integrates the OE-PCB onto the surface of the optical interposer, wherein the integration causes the surface-connection elements to provide electrical connections between the optical interposer and the OE-PCB.
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公开(公告)号：US20230385683A1
公开(公告)日：2023-11-30
申请号：US18248931
申请日：2021-10-29
发明人： Sung-Joo Ben Yoo , Prem Kumar
摘要： One embodiment provides a system and method for transporting quantum datagrams over a network. During operation, a quantum datagram is obtained at a network node. The quantum datagram can include a wrapper and an optical quantum data payload, with the wrapper comprising classical non-quantum optical bits and the quantum data payload comprising quantum bits (qubits). The system separates the wrapper from the quantum data payload such that the classical bits included in the wrapper are processed while the qubits included in the quantum data payload remain undisturbed, and makes a forwarding decision for the quantum datagram based on the processed wrapper.
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公开(公告)号：US09995581B2
公开(公告)日：2018-06-12
申请号：US15377754
申请日：2016-12-13
发明人： Sung-Joo Ben Yoo
IPC分类号： G01C11/00
摘要： A system that performs heterodyne optical imaging across multiple platforms gathers an optical signal from an optical sensor at each of the multiple platforms. At the same time, an optical frequency comb local oscillator (LO) at each of the platforms generates a reference comb signal comprising a set of optical frequency comb lines at different frequencies, wherein each optical frequency comb LO is locked to a local atomic clock at each of the platforms. Next, a mixer, at each of the platforms, is used to mix the optical signal gathered from the optical sensor with the reference comb signal generated by the optical frequency comb LO to generate a mixed signal. The system then communicates the mixed signals generated at each of the platforms to a central location. Finally, the system correlates the mixed signals received from each of the platforms and generates a reconstructed optical image.
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公开(公告)号：US20180143465A1
公开(公告)日：2018-05-24
申请号：US15821600
申请日：2017-11-22
发明人： Sung-Joo Ben Yoo , Chuan Qin , Burcu Ercan , Hongbo Lu
CPC分类号： G02F1/0353 , G02F1/0327 , G02F2201/127 , G02F2203/07
摘要： An optical device is described. This optical device includes an electro-optical material having an X-cut, Y-propagate orientation. In particular, a Y crystallographic direction of the electro-optical material is parallel to an optical waveguide defined in the electro-optic material and an X crystallographic direction of the electro-optical material is parallel to a vertical direction of the optical device. By applying drive signals having an angular frequency to the electo-optic material, the optical device may perform modulation, corresponding to a traveling-wave configuration, of an optical signal based at least in part on the drive signals. where the modulation involves a polarization conversion and a frequency shift. The angular frequency of the drive signals may be selected to approximately cancel electro-optic cross terms in X-Z plane of the electro-optical material. Moreover, an amplitude of the drive signals may be selected so that the optical device emulates a half-wave-plate configuration.
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公开(公告)号：US20170170909A1
公开(公告)日：2017-06-15
申请号：US15377754
申请日：2016-12-13
发明人： Sung-Joo Ben Yoo
摘要： A system that performs heterodyne optical imaging across multiple platforms gathers an optical signal from an optical sensor at each of the multiple platforms. At the same time, an optical frequency comb local oscillator (LO) at each of the platforms generates a reference comb signal comprising a set of optical frequency comb lines at different frequencies, wherein each optical frequency comb LO is locked to a local atomic clock at each of the platforms. Next, a mixer, at each of the platforms, is used to mix the optical signal gathered from the optical sensor with the reference comb signal generated by the optical frequency comb LO to generate a mixed signal. The system then communicates the mixed signals generated at each of the platforms to a central location. Finally, the system correlates the mixed signals received from each of the platforms and generates a reconstructed optical image.
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公开(公告)号：US12119882B2
公开(公告)日：2024-10-15
申请号：US17925786
申请日：2021-06-15
发明人： Sung-Joo Ben Yoo
CPC分类号： H04B10/677 , G02F7/00 , H03M7/3062 , H04B10/60 , H04B10/61 , H04B10/615 , H04B10/616 , H04B10/63
摘要： During operation, the system receives an optical input signal, and also receives a reference optical frequency comb (OFC) signal. Next, the system uses a gapless spectral demultiplexer to spectrally slice the optical input signal to produce a set of spectral slices. The system also uses a high-contrast demultiplexer to strongly isolate each combline of the reference OFC signal to produce a set of reference comblines. Next, in a parallel manner, the system demodulates each spectral slice in the set of spectral slices centered on a single reference combline in the set of reference comblines to produce a set of baseband I/Q signals, wherein each spectral slice is demodulated based on a known code sequence. The system then digitizes the set of baseband I/Q signals to produce a set of digitized signals. Finally, the system processes the set of digitized signals to directly reconstruct a waveform for the optical input signal.
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公开(公告)号：US11144821B2
公开(公告)日：2021-10-12
申请号：US16115353
申请日：2018-08-28
摘要： The disclosed embodiments relate to a system that implements a photonic neuron. This photonic neuron includes: an excitatory-input photo detector that converts an optical excitatory input signal into a corresponding electrical excitatory input signal; and an inhibitory-input photo detector that converts an optical inhibitory input signal into a corresponding electrical inhibitory input signal. It also includes an electrical neuron that receives the electrical excitatory and inhibitory input signals, and generates an electrical output signal, which includes periodic voltage spikes that are triggered by integration of the electrical excitatory and inhibitory input signals. Finally, the photonic neuron includes a light-emitting output device, which converts the electrical output signal into a corresponding optical output signal.
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公开(公告)号：US11099297B1
公开(公告)日：2021-08-24
申请号：US16696994
申请日：2019-11-26
摘要： An imaging spectro-polarimetry system includes a polarizer, a tunable laser, a number of optical nodes and an image processing circuit. The polarizer produces polarized light using light received from an object. The tunable laser generates optical local oscillator (LO) signals. Each optical node receives the polarized light and an optical LO signal, performs a heterodyne mixing and generates a digital signal. The image processing circuit receives digital signals from the optical nodes and generates a magnetogram of the object. The polarizer, the tunable laser, the plurality of optical nodes and the image processing circuit are implemented on a photonic integrated circuit (PIC), and the polarized light includes right and left circularly polarized light.
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公开(公告)号：US09696487B2
公开(公告)日：2017-07-04
申请号：US14697169
申请日：2015-04-27
发明人： Sung-Joo Ben Yoo
CPC分类号： G02B6/122 , C23C14/0036 , C23C14/083 , C23C14/5806 , G02B1/02 , G02B6/132 , G02B2006/12061 , G02B2006/12135 , G02B2006/12142 , G02B2006/12159
摘要： A method and system are described for reducing a thermo-optic effect in silicon photonics. In described embodiments, the system comprises a silicon photonic device with a silicon core that includes a cladding layer comprising titanium adjacent to the silicon core. In described embodiments, the method comprises providing a silicon core and depositing a cladding layer adjacent to the silicon photonic core, wherein the cladding layer comprises titanium.
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