Search Results - "Ram, Rajeev"

Critical evaluation of non-uniform optical phased arrays for real-world beam-steering applications by de Cea, Marc, Ram, Rajeev J.

“…Optical phased arrays (OPAs) are a promising technology for the realization of fast and compact non-mechanical optical beam steering. While many experimental…”
Get full text

Nanosecond pulsed CMOS LED for all-silicon time-of-flight ranging by Li, Zheng, Ram, Rajeev J

“…Light detection and ranging (LIDAR) is a widely used technique for measuring distance. With recent advancements in integrated photonics, there is a growing…”
Get full text

Precise and diffraction-limited waveguide-to-free-space focusing gratings by Mehta, Karan K., Ram, Rajeev J.

“…We present the design and characterization of waveguide grating devices that couple visible-wavelength light at λ  = 674 nm from single-mode, high…”
Get full text

Monolithic silicon-photonic platforms in state-of-the-art CMOS SOI processes [Invited] by Stojanović, Vladimir, Ram, Rajeev J, Popović, Milos, Lin, Sen, Moazeni, Sajjad, Wade, Mark, Sun, Chen, Alloatti, Luca, Atabaki, Amir, Pavanello, Fabio, Mehta, Nandish, Bhargava, Pavan

“…Integrating photonics with advanced electronics leverages transistor performance, process fidelity and package integration, to enable a new class of…”
Get full text

Integrated optical addressing of an ion qubit by Mehta, Karan K., Bruzewicz, Colin D., McConnell, Robert, Ram, Rajeev J., Sage, Jeremy M., Chiaverini, John

“…Individual ion qubits held in a planar ion trap are optically addressed with scalable nanophotonic waveguides and focusing grating couplers integrated with the…”
Get full text

Estimating the value of demand-side management in low-cost, solar micro-grids by Mehra, Varun, Amatya, Reja, Ram, Rajeev J.

“…Demand-side management has the potential to reduce the cost of solar based community micro-grids and solar home systems for electricity access. This paper…”
Get full text

Power handling of silicon microring modulators by de Cea, Marc, Atabaki, Amir H, Ram, Rajeev J

“…Silicon photonic wavelength division multiplexing (WDM) transceivers promise to achieve multi-Tbps data rates for next-generation short-reach optical…”
Get full text

Integrating photonics with silicon nanoelectronics for the next generation of systems on a chip by Atabaki, Amir H., Moazeni, Sajjad, Pavanello, Fabio, Gevorgyan, Hayk, Notaros, Jelena, Alloatti, Luca, Wade, Mark T., Sun, Chen, Kruger, Seth A., Meng, Huaiyu, Al Qubaisi, Kenaish, Wang, Imbert, Zhang, Bohan, Khilo, Anatol, Baiocco, Christopher V., Popović, Miloš A., Stojanović, Vladimir M., Ram, Rajeev J.

“…Electronic and photonic technologies have transformed our lives—from computing and mobile devices, to information technology and the internet. Our future…”
Get full text

On-site growth of perovskite nanocrystal arrays for integrated nanodevices by Jastrzebska-Perfect, Patricia, Zhu, Weikun, Saravanapavanantham, Mayuran, Li, Zheng, Spector, Sarah O., Brenes, Roberto, Satterthwaite, Peter F., Ram, Rajeev J., Niroui, Farnaz

“…Despite remarkable progress in the development of halide perovskite materials and devices, their integration into nanoscale optoelectronics has been hindered…”
Get full text

Inverse design for waveguide dispersion with a differentiable mode solver by Gray, Dodd, West, Gavin N., Ram, Rajeev J.

“…Inverse design of optical components based on adjoint sensitivity analysis has the potential to address the most challenging photonic engineering problems…”
Get full text

Precise and High‐Throughput Delivery of Micronutrients in Plants Enabled by Pollen‐Inspired Spiny and Biodegradable Microcapsules by Liu, Muchun, Cao, Yunteng, Li, Zheng, Wang, Emily, Ram, Rajeev J., Marelli, Benedetto

“…Decarbonizing food production and mitigating agriculture's environmental impact require new technologies for precise delivery of fertilizers and pesticides to…”
Get full text

A 40-Gb/s PAM-4 Transmitter Based on a Ring-Resonator Optical DAC in 45-nm SOI CMOS by Moazeni, Sajjad, Sen Lin, Wade, Mark, Alloatti, Luca, Ram, Rajeev J., Popovic, Milos, Stojanovic, Vladimir

“…The next generations of large-scale data-centers and supercomputers demand optical interconnects to migrate to 400G and beyond. Microring modulators in…”
Get full text

Single-chip microprocessor that communicates directly using light by Sun, Chen, Wade, Mark T., Lee, Yunsup, Orcutt, Jason S., Alloatti, Luca, Georgas, Michael S., Waterman, Andrew S., Shainline, Jeffrey M., Avizienis, Rimas R., Lin, Sen, Moss, Benjamin R., Kumar, Rajesh, Pavanello, Fabio, Atabaki, Amir H., Cook, Henry M., Ou, Albert J., Leu, Jonathan C., Chen, Yu-Hsin, Asanović, Krste, Ram, Rajeev J., Popović, Miloš A., Stojanović, Vladimir M.

“…An electronic–photonic microprocessor chip manufactured using a conventional microelectronics foundry process is demonstrated; the chip contains 70 million…”
Get full text

Computational polarized Raman microscopy on sub-surface nanostructures with sub-diffraction-limit resolution by Li, Zheng, Persits, Nili, Gray, Dodd J., Ram, Rajeev J.

“…Raman microscopy with resolution below the diffraction limit is demonstrated on sub-surface nanostructures. Unlike most other modalities for nanoscale…”
Get full text

Thermoelectrically pumped light-emitting diodes operating above unity efficiency by Santhanam, Parthiban, Gray, Jr, Dodd Joseph, Ram, Rajeev J

“…A heated semiconductor light-emitting diode at low forward bias voltage V<k(B)T/q is shown to use electrical work to pump heat from the lattice to the photon…”
Get full text

Harnessing Raman spectroscopy for the analysis of plant diversity by Jain, Ekta, Rose, Michelle, Jayapal, Praveen Kumar, Singh, Gajendra P., Ram, Rajeev J.

“…Here, we explore the application of Raman spectroscopy for the assessment of plant biodiversity. Raman spectra from 11 vascular plant species commonly found in…”
Get full text

Portable Raman leaf-clip sensor for rapid detection of plant stress by Gupta, Shilpi, Huang, Chung Hao, Singh, Gajendra Pratap, Park, Bong Soo, Chua, Nam-Hai, Ram, Rajeev J.

“…Precision agriculture requires new technologies for rapid diagnosis of plant stresses, such as nutrient deficiency and drought, before the onset of visible…”
Get full text

Photonic ADC: overcoming the bottleneck of electronic jitter by Khilo, Anatol, Spector, Steven J, Grein, Matthew E, Nejadmalayeri, Amir H, Holzwarth, Charles W, Sander, Michelle Y, Dahlem, Marcus S, Peng, Michael Y, Geis, Michael W, DiLello, Nicole A, Yoon, Jung U, Motamedi, Ali, Orcutt, Jason S, Wang, Jade P, Sorace-Agaskar, Cheryl M, Popović, Miloš A, Sun, Jie, Zhou, Gui-Rong, Byun, Hyunil, Chen, Jian, Hoyt, Judy L, Smith, Henry I, Ram, Rajeev J, Perrott, Michael, Lyszczarz, Theodore M, Ippen, Erich P, Kärtner, Franz X

“…Accurate conversion of wideband multi-GHz analog signals into the digital domain has long been a target of analog-to-digital converter (ADC) developers, driven…”
Get full text

Impact of laser frequency noise on high-extinction optical modulation by West, Gavin N, Loh, William, Kharas, Dave, Ram, Rajeev J

“…In present literature on integrated modulation and filtering, limitations in the extinction ratio are dominantly attributed to a combination of imbalance in…”
Get full text

A sub-wavelength Si LED integrated in a CMOS platform by Li, Zheng, Xue, Jin, de Cea, Marc, Kim, Jaehwan, Nong, Hao, Chong, Daniel, Lim, Khee Yong, Quek, Elgin, Ram, Rajeev J.

“…A nanoscale on-chip light source with high intensity is desired for various applications in integrated photonics systems. However, it is challenging to realize…”
Get full text