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公开(公告)号：US10110318B2
公开(公告)日：2018-10-23
申请号：US14931796
申请日：2015-11-03
Applicant: Coriant Advanced Technology, LLC
Inventor： Matthew Akio Streshinsky , Ran Ding , Yang Liu , Ari Novack , Michael Hochberg , Alex Rylyakov
Abstract: A skew compensation apparatus and method. In an optical system that uses optical signals, skew may be generated as the optical signals are processed from an input optical signal to at least two electrical signals representative of the phase-differentiated optical signals. A compensation of the skew is provided by including an optical delay line in the path of the optical signal that does not suffer the skew (e.g., that serves as the time base for the skew measurement). The optical delay line introduces a delay Tskew equal to the delay suffered by the optical signal that is not taken as the time base. The two signals are thereby corrected for skew.
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公开(公告)号：US09874696B2
公开(公告)日：2018-01-23
申请号：US15048107
申请日：2016-02-19
Applicant: Coriant Advanced Technology, LLC
Inventor： Yang Liu , Yangjin Ma , Michael J. Hochberg
CPC classification number: G02B6/2726 , G01J3/0218 , G02B6/126 , G02B6/2766 , G02B6/2773 , G02B6/2793 , G02B6/30 , G02B2006/12142
Abstract: An integrated polarization splitter and rotator (PSR) employs the TE0 and TE1 modes of propagating light, rather than the TE0 and TM0 modes used in conventional prior art PSR. The integrated PSR exhibits appreciably flatter wavelength response because it does not require a directional coupler to de-multiplex incoming polarizations. The PSR allows tuning of the TM0 loss to reduce polarization dependent loss (PDL). This integrated polarization splitter and rotator is applicable to all integrated platforms including Silicon-on-Insulator (SOI) and III-V semiconductor compound systems. The PSR may be very compact (12×2 μm2), and provides low loss (
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公开(公告)号：US09810840B2
公开(公告)日：2017-11-07
申请号：US14989436
申请日：2016-01-06
Applicant: Coriant Advanced Technology, LLC
Inventor： Ruizhi Shi , Thomas Wetteland Baehr-Jones , Yangjin Ma , Yang Liu , Michael J. Hochberg , Matthew Akio Streshinsky
CPC classification number: G02B6/126 , G02B6/1228 , G02B2006/12107 , G02B2006/12126 , G02B2006/12152
Abstract: A low loss high extinction ratio on-chip polarizer is disclosed. The polarizer includes an input waveguide taper having an outer waveguiding region that widens in the direction of light propagation along at least a portion of the taper length, and a core waveguiding region that narrows in the direction of light propagation along at least a portion of the taper length, so as to selectively squeeze out light of undesired modes into the outer regions while preserving light of a desired mode in the waveguide core. An integrated light absorber/deflector may be coupled to the outer waveguiding regions.
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公开(公告)号：US09739938B2
公开(公告)日：2017-08-22
申请号：US14963842
申请日：2015-12-09
Applicant: Coriant Advanced Technology, LLC
Inventor： Ruizhi Shi , Yang Liu , Ari Novack , Yangjin Ma , Kishore Padmaraju , Michael J. Hochberg
CPC classification number: G02B6/12004 , G02B6/122 , G02B6/4277 , G02B2006/12157
Abstract: A light shield may be formed in photonic integrated circuit between integrated optical devices of the photonic integrated circuit. The light shield may be built by using materials already present in the photonic integrated circuit, for example the light shield may include metal walls and doped semiconductor regions. Light-emitting or light-sensitive integrated optical devices or modules of a photonic integrated circuit may be constructed with light shields integrally built in.
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5.发明申请公开(公告)号：US20170149508A1
公开(公告)日：2017-05-25
申请号：US14945529
申请日：2015-11-19
Applicant: Coriant Advanced Technology LLC
Inventor： Thomas Wetteland Baehr-Jones , Michael J. Hochberg , Yang Liu
IPC: H04B10/516
CPC classification number: H04B10/516 , G02F1/3132 , G02F2203/15
Abstract: Described are various embodiments of a dual optical modulator, system and method. In one embodiment, an optical modulator modulates an input optical signal having a designated optical frequency. The modulator comprises first and second tunable modulators operable around the optical frequency and operatively disposed between a bus waveguide path and an opposed waveguide path. The modulator further comprises a relative optical phase-shifter optically coupled between the tunable modulators so to impart a relative optical phase shift between the bus waveguide path and the opposed waveguide path. The tunable modulators are respectively driveable to modulate a respective resonance thereof in complimentary directions relative to the optical frequency and thereby resonantly redirect a selectable portion of the input optical signal along the opposed waveguide path such that the relative optical phase shift is imparted thereto for output. Embodiments of an optical modulation method and an IQ modulator are also described.
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Patent Agency Ranking
公开(公告)号：US20170192171A1
公开(公告)日：2017-07-06
申请号：US14989436
申请日：2016-01-06
Applicant: Coriant Advanced Technology, LLC
Inventor： Ruizhi Shi , Thomas Wetteland Baehr-Jones , Yangjin Ma , Yang Liu , Michael J. Hochberg , Matthew Akio Streshinsky
CPC classification number: G02B6/126 , G02B6/1228 , G02B2006/12107 , G02B2006/12126 , G02B2006/12152
Abstract: A low loss high extinction ratio on-chip polarizer is disclosed. The polarizer includes an input waveguide taper having an outer waveguiding region that widens in the direction of light propagation along at least a portion of the taper length, and a core waveguiding region that narrows in the direction of light propagation along at least a portion of the taper length, so as to selectively squeeze out light of undesired modes into the outer regions while preserving light of a desired mode in the waveguide core. An integrated light absorber/deflector may be coupled to the outer waveguiding regions.
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公开(公告)号：US09638942B2
公开(公告)日：2017-05-02
申请号：US14840409
申请日：2015-08-31
Applicant: Coriant Advanced Technology, LLC
Inventor： Thomas Baehr-Jones , Yang Liu
CPC classification number: G02F1/025 , G02F1/01 , G02F1/011 , G02F1/015 , G02F1/035 , G02F1/0353 , G02F1/0356 , G02F1/2257 , G02F2001/0113 , G02F2001/0152
Abstract: A novel phase shifter design for carrier depletion based silicon modulators, based on an experimentally validated model, is described. It is believed that the heretofore neglected effect of incomplete ionization will have a significant impact on ultra-responsive phase shifters. A low VπL product of 0.3 V·cm associated with a low propagation loss of 20 dB/cm is expected to be observed. The phase shifter is based on overlapping implantation steps, where the doses and energies are carefully chosen to utilize counter-doping to produce an S-shaped junction. This junction has a particularly attractive VπL figure of merit, while simultaneously achieving attractively low capacitance and optical loss. This improvement will enable significantly smaller Mach-Zehnder modulators to be constructed that nonetheless would have low drive voltages, with substantial decreases in insertion loss. The described fabrication process is of minimal complexity; in particular, no high-resolution lithographic step is required.
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公开(公告)号：US20160033765A1
公开(公告)日：2016-02-04
申请号：US14834597
申请日：2015-08-25
Applicant: Coriant Advanced Technology, LLC
Inventor： Yang Liu , Yangjin Ma , Ruizhi Shi , Michael J. Hochberg , Yi Zhang , Shuyu Yang , Thomas Wetteland Baehr-Jones
CPC classification number: G02B6/125 , G02B6/107 , G02B6/1223 , G02B6/1228 , G02B6/2808 , G02B27/0012 , G02B2006/12038 , G02B2006/12061 , G02B2006/1215 , G06F17/5009 , G06F17/5018 , G06F17/5077 , G06N3/126
Abstract: A compact, low-loss and wavelength insensitive Y-junction for submicron silicon waveguides. The design was performed using FDTD and particle swarm optimization (PSO). The device was fabricated in a 248 nm CMOS line. Measured average insertion loss is 0.28±0.02 dB across an 8-inch wafer. The device footprint is less than 1.2 μm×2 μm, orders of magnitude smaller than MMI and directional couplers.
Abstract translation: 亚微米硅波导的紧凑，低损耗和波长不敏感的Y结。 该设计采用FDTD和粒子群优化（PSO）进行。 该器件采用248nm CMOS线制造。 8英寸晶圆的测量平均插入损耗为0.28±0.02 dB。 器件占地面积小于1.2μm×2μm，比MMI和定向耦合器小一个数量级。
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公开(公告)号：US20160012176A1
公开(公告)日：2016-01-14
申请号：US14858519
申请日：2015-09-18
Applicant: Coriant Advanced Technology, LLC
Inventor： Yang Liu , Michael J. Hochberg , Yi Zhang , Yangjin Ma , Ruizhi Shi
CPC classification number: G06F17/5081 , G02B6/107 , G02B6/1223 , G02B6/125 , G02B6/2808 , G02B2006/12061 , G02B2006/1215 , G06F17/5009 , G06F17/5077
Abstract: A compact, low-loss and wavelength insensitive Y-junction for submicron silicon waveguides. The design was performed using FDTD and particle swarm optimization (PSO). The device was fabricated in a 248 nm CMOS line. Measured average insertion loss is 0.28±0.02 dB across an 8-inch wafer. The device footprint is less than 1.2 μm×2 μm, orders of magnitude smaller than MMI and directional couplers.
Abstract translation: 亚微米硅波导的紧凑，低损耗和波长不敏感的Y结。 该设计采用FDTD和粒子群优化（PSO）进行。 该器件采用248nm CMOS线制造。 8英寸晶圆的测量平均插入损耗为0.28±0.02 dB。 器件占地面积小于1.2μm×2μm，比MMI和定向耦合器小一个数量级。
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10.发明授权公开(公告)号：US09787405B2
公开(公告)日：2017-10-10
申请号：US14945529
申请日：2015-11-19
Applicant: Coriant Advanced Technology LLC
Inventor： Thomas Wetteland Baehr-Jones , Michael J. Hochberg , Yang Liu
IPC: H04B10/04 , H04B10/516 , G02F1/313
CPC classification number: H04B10/516 , G02F1/3132 , G02F2203/15
Abstract: Described are various embodiments of a dual optical modulator, system and method. In one embodiment, an optical modulator modulates an input optical signal having a designated optical frequency. The modulator comprises first and second tunable modulators operable around the optical frequency and operatively disposed between a bus waveguide path and an opposed waveguide path. The modulator further comprises a relative optical phase-shifter optically coupled between the tunable modulators so to impart a relative optical phase shift between the bus waveguide path and the opposed waveguide path. The tunable modulators are respectively driveable to modulate a respective resonance thereof in complimentary directions relative to the optical frequency and thereby resonantly redirect a selectable portion of the input optical signal along the opposed waveguide path such that the relative optical phase shift is imparted thereto for output. Embodiments of an optical modulation method and an IQ modulator are also described.
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