Globalfoundries U.S. Inc.

Globalfoundries Inc.

Khalifa University

Yusheng Bian

Ajey Poovannummoottil Jacob

Michal Rakowski

Steven M Shank

Roderick Alan Augur

Kenneth John Giewont

Bo Peng

Won Suk Lee

Karen A Nummy

Abdelsalam A Aboketaf

Abu Thomas

Asif J Chowdhury

Theodore James Letavic

Judson Robert Holt

Siva P Adusumilli

Andreas Daniel Stricker

Mark Levy

Sujith Chandran

Edward William Kiewra

Nicholas A Polomoff

Ryan W Sporer

Kevin K Dezfulian

Hemant M Dixit

Qizhi Liu

Vibhor Jain

Shesh Mani Pandey

Bartlomiej Jan Pawlak

Thomas F Houghton

Jaime Viegas

Takako Hirokawa

Brett T Cucci

Francis Afzal

Petar I Todorov

Colleen Meagher

Alec Hammond

Hanyi Ding

Benjamin V Fasano

George Robert Mulfinger

Akhilesh Ramlaut Jaiswal

Zhuojie Wu

Koushik Ramachandran

Keith Donegan

Oscar Restrepo

Asli Sahin

Marcus Dahlem

Anthony K Stamper

John J Ellis-Monaghan

Robert K Leidy

John Joseph Pekarik

William James Taylor, Jr

Ravi Prakash Srivastava

David C Pritchard

Alexander Lee Martin

Domingo A Ferrer

Elizabeth Strehlow

Tymon Barwicz

Robert J Fox, Iii

Dali Shao

Laura J Silverstein

Adam S Rosenfeld

Spencer H Porter

Rod Augur

Abdelsalam Aboketaf

Thomas Houghton

Sunoo Kim

Eduardo Cruz Silva

Carrie Yurkon

Bob Mulfinger

Aboketaf Abdelsalam

Michel Rakowski

Humarira Zafar

Lin Jiang

Subramanian Krishnamurthy

Yonas Gebregiorgis

Marios Papadovasilakis

Thomas G Weeks, Iii

Bruna Paredes

Structures including a calibration marker adjacent to a photonic structure and methods of forming such structures. The structure comprises a semiconductor substrate, a photonic structure, and a back-end-of-line stack over the semiconductor substrate. The back-end-of-line stack includes a plurality of fill features, an exclusion area surrounded by the plurality of fill features, and a calibration marker in the exclusion area. The calibration marker is disposed adjacent to the photonic structure, and the calibration marker includes a feature having a predetermined dimension.

Calibration markers for a photonics chip

Structures for a directional coupler and methods of forming a structure for a directional coupler. The structure comprises a first waveguide core including a first plurality of segments, and a second waveguide core including a second plurality of segments disposed adjacent to the first plurality of segments in a coupling region. The structure further comprises a first cladding layer comprising a first material that has a first refractive index, and a second cladding layer comprising a second material that has a second refractive index different from the first refractive index. The first cladding layer adjoins a first sidewall of each of the first plurality of segments and a first sidewall of each of the second plurality of segments, and the second cladding layer adjoins a second sidewall of each of the first plurality of segments and a second sidewall of each of the second plurality of segments.

Directional couplers with heterogenous claddings

Structures including an edge coupler and methods of forming such structures. The structure comprises an edge coupler including a first portion and a second portion between the first portion and a semiconductor substrate, a first coupling-assistance feature adjacent to the first portion of the edge coupler, and a second coupling-assistance feature adjacent to the first portion of the edge coupler. The first portion of the edge coupler is positioned in a lateral direction between the first coupling-assistance feature and the second coupling-assistance feature.

Edge couplers with coupling-assisting features

Structures including multiple photonics chips and methods of fabricating a structure including multiple photonics chips. The structure comprises a first chip including a first edge and a first plurality of optical couplers disposed at the first edge, and a second chip including a second edge adjacent to the first edge of the first chip and a second plurality of optical couplers. The second plurality of optical couplers are disposed at the second edge adjacent to the first plurality of optical couplers.

Optical input/output interfaces between photonics chips

Structures for an edge coupler and methods of forming such structures. The structure comprises a semiconductor substrate, a first waveguide core including a curved section and an end that terminates the curved section, and a second waveguide core including a section disposed adjacent to the curved section of the first waveguide core. The first waveguide core is positioned between the second waveguide core and the semiconductor substrate.

Dual-layer edge couplers with curved coupling-assistance features

Disclosed is a photonic integrated circuit (PIC) structure including a scattering light-based monitor with photodetectors (e.g., PIN and/or avalanche photodiodes) placed adjacent to one or both sides of an end portion (i.e., a coupler) of a waveguide core at an optical interface with another optical device. The photodetectors are placed in such a way as to enable sensing of scattering light emitted from the end portion as light signals are received (e.g., either from the optical device for propagation to the main body of the waveguide core or from the main body for transmission to the optical device). Also disclosed are a monitoring system and method including the PIC chip structure with the above-described scattering light-based monitor. The system and method assess the optical interface using electric signals generated by the photodetectors.

Scattering light-based monitor for photonic integrated circuit, monitoring system and monitoring method

The disclosure relates to a PIC structure including a photonic component on a semiconductor substrate. A passive optical guard is composed of a light absorbing material and is in proximity to the photonic component. The passive optical guard includes at least a portion in an active semiconductor layer of the semiconductor substrate and may be entirely below a first metal layer. The passive optical guard may include at least one of: a germanium body positioned at least partially in a silicon element in the active semiconductor layer, a silicon body having a high dopant concentration in the active semiconductor layer, and a polysilicon body having a high dopant concentration over the silicon body.

Photonic integrated circuit including passive optical guard

Plasmonic photonic structures that include a layer that exhibits an electric-field-induced Pockels effect and methods of forming such structures. The structure comprises a waveguide core on a substrate, a first layer that has an overlapping relationship with the first waveguide core, and a second layer that has an overlapping relationship with the first waveguide core and the first layer. The first layer comprises a metal, and the second layer comprising a material that exhibits an electric-field-induced Pockels effect.

Plasmonic photonic structures including a layer that exhibits an electric-field-induced Pockels effect

The present disclosure relates to semiconductor structures and, more particularly, to hybrid edge couplers with voids and methods of manufacture. The structure includes: a dielectric material; at least one waveguide structure embedded within the dielectric material; and at least one airgap within the dielectric material and extending along a length of the at least one waveguide structure.

Hybrid edge couplers with voids

Structures for a waveguide and methods of forming a waveguide. The structure comprises a substrate, a waveguide core comprising a compound semiconductor material, and a layer disposed on the substrate. The layer comprises the compound semiconductor material, and the layer includes a cavity positioned beneath the waveguide core.

Compound-semiconductor waveguides with airgap cladding

Structures for a polarization rotator and methods of forming a structure for a polarization rotator. The structure comprises a first waveguide core having a first section, a second section, a first terminating end, and a second terminating end opposite to the first terminating end. The first and second sections of the first waveguide core are arranged between the first terminating end and the second terminating end. The structure further comprises a second waveguide core including a first tapered section having a first overlapping arrangement with the first section of the first waveguide core and a second tapered section having a second overlapping arrangement with the second section of the first waveguide core. The first waveguide core comprises a first material, and the second waveguide core comprises a second material different from the first material.

Polarization rotators with overlapping waveguide cores

Structures for an optical power splitter and methods of forming a structure for an optical power splitter. The structure comprises a spiral waveguide core having an outer perimeter. The structure further comprises a plurality of waveguide cores. Each waveguide core has a section disposed adjacent to the outer perimeter of the spiral waveguide core.

Optical power splitters incorporating one or more spiral elements

A structure or PIC structure includes a hybrid plasmonic (HP) waveguide. The HP waveguide includes a waveguide core, and a metal silicide layer contacting the waveguide core. The metal silicide layer replaces noble metals typically provided in hybrid plasmonic waveguides, providing improved optical signal containment characteristics. The metal silicide layer is also compatible with CMOS fabrication techniques, and capable of additional scaling with other CMOS structures. The HP waveguide also has a reduce form factor compared to conventional HP waveguides, providing room for more waveguides closer together.

Structure including hybrid plasmonic waveguide using metal silicide layer

Structures for a waveguide escalator and methods of forming such structures. A structure comprises a first waveguide core, and a back-end-of-line stack including a first dielectric layer, a second dielectric layer on the first dielectric layer, an opening in the second dielectric layer, a second waveguide core including a section that overlaps with a section of the first waveguide core, and a plurality of third waveguide cores disposed between the section of the first waveguide core and the section of the second waveguide core. The plurality of third waveguide cores are positioned inside the opening in the second dielectric layer, the first dielectric layer comprises a first material with a first refractive index, and the second dielectric layer comprises a second material with a second refractive index different from the first refractive index.

Waveguide escalators for a photonics chip

Structures including an edge coupler and methods of forming such structures. The structure comprises a dielectric layer on a semiconductor substrate. The dielectric layer includes a cavity and an edge defining a boundary of the cavity. The structure further comprises an edge coupler including a waveguide core. The waveguide core includes a portion that extends past the edge of the dielectric layer and overhangs the cavity. The structure further comprises a heater positioned adjacent to the portion of the waveguide core. The heater is spaced by a gap from the portion of the waveguide core.

Edge couplers with a fine-alignment mechanism

Growing community of inventors

Ballston Lake, NY, United States of America

Yusheng Bian