Massachusetts Institute of Technology

Ayar Labs, Inc.

Sanofi

Micron Technology Incorporated

Temasek Life Sciences Laboratory Limited

Mount Holyoke College

One Earth Designs Inc.

Other

3m Innovative Properties Company

Physical Sciences, Inc.

Rajeev J Ram

Milos A Popovic

Vladimir Marko Stojanovic

Amir Hossein Atabaki

Mark Taylor Wade

Chen Sun

Alexandra Carroll Wright

Roy Edward Meade

Jason Scott Orcutt

Karan Mehta

Derek Van Orden

Horst Blum

William F Herrington

Shireen Goh

Michelangelo Canzoneri

Jeffrey Michael Shainline

Zvi Sternberg

Ofer Tehar-Zahav

Efraim Megged

Michael Davenport

Kevin Shao-Kwan Lee

Amy Qian

Huaiyu Meng

Klavs F Jensen

Zheng Li

James Francis Brennan, Iii

Hermann A Haus

Dodd Joseph Gray

Luca Alloatti

Erika Ye

Ningren Han

Marc De Cea Falco

Parthiban Santhanam

Janice A Hudgings

Scot G Frank

Orian Z Welling

Dinis Cheian

Brad Simpson

Reja Amatya

Jaehwan Kim

Gajendra Pratap Singh

Catlin Powers

Kevin P Pipe

Jin Xue

Erich P Ippen

Judy L Hoyt

Paul William Juodawlkis

Harry Lee

Mark G Allen

Siva Yegnanarayanan

Tauhid Rashed Zaman

Patrick C Chou

In-cheol Jang

William Loh

Nili Persits

Benny Jian Rong Sng

Chung Hao Huang

Nam-Hai Chua

Bong Soo Park

Juan Montoya

Joel M Hensley

Krishnan R Parameswaran

Maryam Farzaneh

Charles Holzwarth

Dietrich Lueerssen

Peter M Mayer

Xiaoyun Guo

Harry L T Lee

Steven G Patterson

Holger Schmidt

Ebrahim Dakhil Al Johani

Van Derek Orden

A laser light generator is configured to generate one or more wavelengths of continuous wave laser light. The laser light generator is configured to collectively and simultaneously transmit each of the wavelengths of continuous wave laser light through an optical output of the laser light generator as a laser light supply. An optical fiber is connected to receive the laser light supply from the optical output of the laser light generator. An optical distribution network has an optical input connected to receive the laser light supply from the optical fiber. The optical distribution network is configured to transmit the laser light supply to each of one or more optical transceivers and/or optical sensors. The laser light generator is physically separate from each of the one or more optical transceivers and/or optical sensors.

Multi-wavelength laser system for optical data communication links and associated methods

The present invention relates to the use of a Raman spectral signature of nitrate, as a biomarker for an early, real-time diagnosis of nitrogen status in growing plants in a non-invasive or non-destructive way in order to detect nitrogen deficiency before the onset of any visible symptoms. The early, real-time diagnosis of nitrogen deficiency in plants makes it possible to correct nitrogen deficiency for the avoidance of negative effects on the yield and biomass of growing plants or leafy vegetables.

Early diagnosis and management of nitrogen deficiency in plants utilizing Raman spectroscopy

The present invention relates to the use of a Raman spectral signature for detection of plant metabolites, specifically carotenoids, in tissue of a plant leaf. Carotenoids are used as a biomarker for an early, real-time diagnosis of shade avoidance syndrome (SAS) in growing plants in a non-invasive or non-destructive way in order to detect the adverse effect of the SAS upon their health, and ultimately their yield. The early, real-time diagnosis of SAS provides a window period within which further adverse effects of SAS may be slowed or prevented without negatively affecting the yield of growing plants or leafy vegetables.

Raman optical biomarker for shade avoidance syndrome in plants

An optical input/output chiplet is disposed on a first package substrate. The optical input/output chiplet includes one or more supply optical ports for receiving continuous wave light. The optical input/output chiplet includes one or more transmit optical ports through which modulated light is transmitted. The optical input/output chiplet includes one or more receive optical ports through which modulated light is received by the optical input/output chiplet. An optical power supply module is disposed on a second package substrate. The second package substrate is separate from the first package substrate. The optical power supply module includes one or more output optical ports through which continuous wave laser light is transmitted. A set of optical fibers optically connect the one or more output optical ports of the optical power supply module to the one or more supply optical ports of the optical input/output chiplet.

Chip-to-chip optical data communication system

Control of volume in bioreactors and associated systems is generally described. Feeding and/or sampling strategies can be employed, in some embodiments, such that the working volume within the bioreactor remains substantially constant.

Small volume bioreactors with substantially constant working volumes and associated systems and methods

An interposer device includes a substrate that includes a laser source chip interface region, a silicon photonics chip interface region, an optical amplifier module interface region. A fiber-to-interposer connection region is formed within the substrate. A first group of optical conveyance structures is formed within the substrate to optically connect a laser source chip to a silicon photonics chip when the laser source chip and the silicon photonics chip are interfaced to the substrate. A second group of optical conveyance structures is formed within the substrate to optically connect the silicon photonics chip to an optical amplifier module when the silicon photonics chip and the optical amplifier module are interfaced to the substrate. A third group of optical conveyance structures is formed within the substrate to optically connect the optical amplifier module to the fiber-to-interposer connection region when the optical amplifier module is interfaced to the substrate.

Laser module for optical data communication system within silicon interposer

Light-emitting diodes having radiative recombination regions with deep sub-micron dimensions are described. The LEDs can be fabricated from indirect bandgap semiconductors and operated under forward bias conditions to produce intense light output from the indirect bandgap material. The light output per unit emission area can be over 500 W cm, exceeding the performance of even high brightness gallium nitride LEDs.

Silicon nano light emitting diodes

Control of humidity in chemical reactors, and associated systems and methods, are generally described. In certain embodiments, the humidity within gas transport conduits and chambers can be controlled to inhibit unwanted condensation within gas transport pathways. By inhibiting condensation within gas transport pathways, clogging of such pathways can be limited (or eliminated) such that transport of gas can be more easily and controllably achieved. In addition, strategies for purging condensed liquid from chemical reactor systems are also described.

Humidity control in chemical reactors

Swept-source Raman spectroscopy uses a tunable laser and a fixed-wavelength detector instead of a spectrometer or interferometer to perform Raman spectroscopy with the throughput advantage of Fourier transform Raman spectroscopy without bulky optics or moving mirrors. Although the tunable laser can be larger and more costly than a fixed wavelength diode laser used in other Raman systems, it is possible to split and switch the laser light to multiple ports simultaneously and/or sequentially. Each site can be monitored by its own fixed-wavelength detector. This architecture can be scaled by cascading fiber switches and/or couplers between the tunable laser and measurement sites. By multiplexing measurements at different sites, it is possible to monitor many sites at once. Moreover, each site can be meters to kilometers from the tunable laser. This makes it possible to perform swept-source Raman spectroscopy at many points across a continuous flow manufacturing environment with a single laser.

Multiplexed sensor network using swept source Raman spectroscopy

A photovoltaic modulator utilizes free carriers generated by absorption of optical radiation passing through the modulator to achieve ultra-low energy modulation of the radiation. The photovoltaic modulator can also function as an electro-optic transducer for low-power, low-EMI, high-density sensing applications.

Photovoltaic optical modulators

Semiconductor optical modulators are described that utilize bipolar junction transistor (BJT) structure within the optical modulator. The junctions within the BJT can be designed and biased to increase modulator efficiency and speed. An optical mode may be located in a selected region of the BJT structure to improve modulation efficiency. The BJT structure can be included in optical waveguides of interferometers and resonators to form optical modulators.

Bipolar junction transistor optical modulator

Photodetectors using photonic crystals (PhCs) in polysilicon film that include an in-plane resonant defect. A biatomic photodetector includes an optical defect mode that is confined from all directions in the plane of the PhC by the photonic bandgap structure. The coupling of the resonance (or defect) mode to out-of-plane radiation can be adjusted by the design of the defect. Further, a 'guided-mode resonance' (GMR) photodetector provides in-plane resonance through a second-order grating effect in the PhC. Absorption of an illumination field can be enhanced through this resonance.

Resonance enhanced surface illuminated sub-bandgap infrared photodetectors

Optical read-out of a cryogenic device (such as a superconducting logic or detector element) can be performed with a forward-biased optical modulator that is directly coupled to the cryogenic device without any intervening electrical amplifier. Forward-biasing at cryogenic temperatures enables very high modulation efficiency (1,000-10,000 pm/V) of the optical modulator, and allows for optical modulation with millivolt driving signals and microwatt power dissipation in the cryogenic environment. Modulated optical signals can be coupled out of the cryostat via an optical fiber, reducing the thermal load on the cryostat. Using optical fiber instead of electrical wires can increase the communication bandwidth between the cryogenic environment and room-temperature environment to bandwidth densities as high as Tbps/mmusing wavelength division multiplexing. Sensitive optical signals having higher robustness to noise and crosstalk, because of their immunity to electromagnetic interference, can be carried by the optical fiber.

Forward-biased modulator for cryogenic optical readout

Growing community of inventors

Boston, MA, United States of America

Rajeev J Ram