公开(公告)号：US10171176B2

公开(公告)日：2019-01-01

申请号：US15357392

申请日：2016-11-21

Applicant: Coriant Advanced Technology, LLC

Inventor： Bernd-Harald Horst Jurgen Rohde ,  Richard C. Younce

IPC: H04B10/64 ,  H04B10/61

Abstract: An electrical circuit and method for de-modulation and carrier recovery of PSK modulated carrier signals in analog domain are described. A portion of the received PSK-modulated carrier signal is passed through a signal multiplication circuit to obtain a frequency-multiplied carrier that is absent of the PSK modulation, which is then passed through a frequency dividing circuit to obtain a reference carrier at the received carrier frequency. The reference signal is then mixed with the received PSK-modulated carrier signal to obtain a de-modulated baseband signal. The method may be used in heterodyne receivers of optical BPSK and QPSK signals.

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

IPC: H04B10/00 ,  H04B10/61 ,  H04B10/2507 ,  G02B6/42 ,  G02F1/313 ,  H04B10/40 ,  G02B6/28

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.

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

IPC: G02B6/27 ,  G01J3/02 ,  G02B6/126 ,  G02B6/30 ,  G02B6/12

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 (

公开(公告)号：US09829632B2

公开(公告)日：2017-11-28

申请号：US14988829

申请日：2016-01-06

Applicant: Coriant Advanced Technology, LLC

Inventor： Yangjin Ma ,  Michael J. Hochberg

IPC: G02B6/14 ,  G02B6/122 ,  G02B6/126 ,  G02B6/12

CPC classification number: G02B6/126 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/14 ,  G02B2006/12119 ,  G02B2006/12152 ,  G02B2006/12195

Abstract: A bent taper is provided that includes one or more waveguide bends, at least one of which has a tapering waveguide width along at least a portion thereof. In one embodiment, the bent taper is an S-shaped bent taper that is configured as a TE0-TE1 mode convertor. Such a bent taper can be combined with a linear bi-layer taper configured as a TM0-TE1 mode converter to form a TM0-TE0 polarization rotator.

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

IPC: G02B6/26 ,  G02B6/126 ,  G02B6/122 ,  G02B6/12

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.

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

IPC: G02B6/12 ,  G02B6/122 ,  G02B6/42

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.

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.

公开(公告)号：US20170103934A1

公开(公告)日：2017-04-13

申请号：US15370307

申请日：2016-12-06

Applicant: Coriant Advanced Technology, LLC

Inventor： Nathan A. Nuttall

IPC: H01L23/367 ,  G02B6/42 ,  H01L23/552 ,  H01L23/373 ,  H01L23/48 ,  H01L25/16

CPC classification number: H01L23/3672 ,  G02B6/4243 ,  G02B6/4269 ,  G02B6/4274 ,  H01L23/13 ,  H01L23/3675 ,  H01L23/373 ,  H01L23/3736 ,  H01L23/481 ,  H01L23/552 ,  H01L25/071 ,  H01L25/167

Abstract: A heat sink for a semiconductor chip device includes cavities in a lower surface thereof for receiving electrical components on a top surface of the semiconductor chip, and a pedestal extending through an opening in the semiconductor chip for contacting electrical components on a bottom surface of the semiconductor chip. A lid may also be provided on the bottom surface of the semiconductor chip for protecting the electrical components and for heat sinking the electrical components to an adjacent device or printed circuit board.

公开(公告)号：US20170082799A1

公开(公告)日：2017-03-23

申请号：US14860537

申请日：2015-09-21

Applicant: Coriant Advanced Technology, LLC

Inventor： Ari Novack ,  Matthew Akio Streshinsky ,  Michael J. Hochberg

IPC: G02B6/124 ,  H01L21/66 ,  G01R31/308 ,  G02B6/13

CPC classification number: G02B6/124 ,  G01M11/30 ,  G01R31/308 ,  G02B6/12 ,  G02B6/13 ,  H01L22/12

Abstract: A qualification apparatus for a photonic chip on a wafer that leaves undisturbed an edge coupler that provides an operating port for the photonic devices or circuits on the chip during normal operation in order to not introduce extra loss in the optical path of the final circuit. The qualification apparatus provides an optical path that is angled with regard to the surface of the chip, for example by using a grating coupler. The qualification apparatus can be removed after the chip is qualified. Optionally, the qualification apparatus can be left in communication with the chip and optionally employed as an input port for the chip after the chip has been separated from other chips on a common substrate.

公开(公告)号：US20170045689A1

公开(公告)日：2017-02-16

申请号：US15340161

申请日：2016-11-01

Applicant: Coriant Advanced Technology, LLC

Inventor： Yi Zhang ,  Shuyu Yang ,  Kishore Padmaraju ,  Michael J. Hochberg

IPC: G02B6/293 ,  G02F1/025 ,  G01K7/01 ,  G02B6/12

CPC classification number: G02B6/29398 ,  G01K7/01 ,  G02B6/12004 ,  G02B6/29338 ,  G02B6/29341 ,  G02B6/29395 ,  G02B2006/12135 ,  G02B2006/12138 ,  G02F1/025 ,  G02F2001/0151

Abstract: An optical device that includes means for thermal stabilization and control is described. The optical device can be a ring resonator, or another device that requires accurate control of the phase of the optical signal. In an example involving an optical resonator, a thermal stabilization system includes a temperature sensor, a control circuit, and a heater local to the resonator. The temperature sensor can be a bandgap temperature sensor formed of a pair of matched p/n junctions biased in operation at different junction currents.

Abstract translation: 描述了包括用于热稳定和控制的装置的光学装置。 光学器件可以是环形谐振器，或者需要对光信号的相位进行精确控制的另一器件。 在涉及光学谐振器的示例中，热稳定系统包括温度传感器，控制电路和谐振器局部的加热器。 温度传感器可以是带隙温度传感器，其由在不同结电流处工作而偏置的一对匹配的p / n结形成。