Depletion-mode carrier-plasma optical modulator in zero-change advanced CMOS.

14:18 EDT 1st October 2014 | BioPortfolio

Summary of "Depletion-mode carrier-plasma optical modulator in zero-change advanced CMOS."

We demonstrate the first (to the best of our knowledge) depletion-mode carrier-plasma optical modulator fabricated in a standard advanced complementary metal-oxide-semiconductor (CMOS) logic process (45 nm node SOI CMOS) with no process modifications. The zero-change CMOS photonics approach enables this device to be monolithically integrated into state-of-the-art microprocessors and advanced electronics. Because these processes support lateral p-n junctions but not efficient ridge waveguides, we accommodate these constraints with a new type of resonant modulator. It is based on a hybrid microring/disk cavity formed entirely in the sub-90 nm thick monocrystalline silicon transistor body layer. Electrical contact of both polarities is made along the inner radius of the multimode ring cavity via an array of silicon spokes. The spokes connect to p and n regions formed using transistor well implants, which form radially extending lateral junctions that provide index modulation. We show 5 Gbps data modulation at 1265 nm wavelength with 5.2 dB extinction ratio and an estimated 40  fJ/bit energy consumption. Broad thermal tuning is demonstrated across 3.2 THz (18 nm) with an efficiency of 291  GHz/mW. A single postprocessing step to remove the silicon handle wafer was necessary to support low-loss optical confinement in the device layer. This modulator is an important step toward monolithically integrated CMOS photonic interconnects.

Affiliation

Journal Details

This article was published in the following journal.

Name: Optics letters
ISSN: 1539-4794
Pages: 2657-9

Links

PubMed Articles [14596 Associated PubMed Articles listed on BioPortfolio]

Optical Frequency Upconversion Technique for Transmission of Wireless MIMO-Type Signals over Optical Fiber.

The optical fiber is well adapted to pass multiple wireless signals having different carrier frequencies by using radio-over-fiber (ROF) technique. However, multiple wireless signals which have the sa...

Ultrafast all-optical graphene modulator.

Graphene is an optical material of unusual characteristics because of its linearly dispersive conduction and valence bands and the strong interband transitions. It allows broadband light-matter intera...

Compact-sized high-modulation-efficiency silicon Mach-Zehnder modulator based on a vertically dipped depletion junction phase shifter for chip-level integration.

We present small-sized depletion-type silicon Mach-Zehnder (MZ) modulator with a vertically dipped PN depletion junction (VDJ) phase shifter based on a CMOS compatible process. The fabricated device w...

Asymmetric Bessel modes.

We propose a new, three-parameter family of diffraction-free asymmetric elegant Bessel modes (aB-modes) with an integer and fractional orbital angular momentum (OAM). The aB-modes are described by the...

Thermally driven continuous-wave and pulsed optical vortex.

We demonstrated a continuous-wave (cw) and pulsed optical vortex with topological charges driven by heat generated during the lasing process without introducing the astigmatism effect and reducing las...

Clinical Trials [2208 Associated Clinical Trials listed on BioPortfolio]

Rituximab in Adult Acquired Idiopathic Thrombotic Thrombocytopenic Purpura

Multicentric non-randomized phase II opened prospective study (10 centres involved). Primary endpoint: - To evaluate the kinetics of B-cell depletion by rituximab and its pharmacokine...

Leukocyte Depletion of Autologous Whole Blood

Leukocyte depletion of autologous whole blood prior to storage does not reduce infection rate (wound, urinary tract, other), use of antibiotic treatment and length of hospital stay but may...

An Exploratory Study on Optical Assessment of Oral Mucositis

Objectives: 1. To assess the tolerability of performing optical coherence tomography and/or optical spectroscopy in patients with acute oral mucositis. 2. To determine the...

A Pilot Study to Evaluate Optical Spectroscopy and SIAscopy of Pigmented Skin Lesions

The purpose of this study is to evaluate the physiological correlates of two imaging devices (1)Modified Two Layer Diffuse Optical Spectroscopy (MTL DOS ) and (2)SIAscopy in the evaluation...

Peripheral Immunologic Response of Solid Organ Transplant Recipients to Depletion Versus Non-depletion Protocols

Rejection and infection are primary causes of morbidity and mortality in solid organ transplant recipients. Current clinical practice relies on immunosuppressive drug levels measured in p...

Medical and Biotech [MESH] Definitions

Hemeproteins whose characteristic mode of action involves transfer of reducing equivalents which are associated with a reversible change in oxidation state of the prosthetic group. Formally, this redox change involves a single-electron, reversible equilibrium between the Fe(II) and Fe(III) states of the central iron atom (From Enzyme Nomenclature, 1992, p539). The various cytochrome subclasses are organized by the type of HEME and by the wavelength range of their reduced alpha-absorption bands.

A site on an enzyme which upon binding of a modulator, causes the enzyme to undergo a conformational change that may alter its catalytic or binding properties.

An enzyme of long-chain fatty acid synthesis, that adds a two-carbon unit from malonyl-(acyl carrier protein) to another molecule of fatty acyl-(acyl carrier protein), giving a beta-ketoacyl-(acyl carrier protein) with the release of carbon dioxide. EC 2.3.1.41.

Cyclic AMP response element modulator is a basic leucine zipper transcription factor that is regulated by CYCLIC AMP. It plays an important role in SPERMATID development in the mammalian TESTIS.

An NAD-dependent enzyme that catalyzes the oxidation of acyl-[acyl-carrier protein] to trans-2,3-dehydroacyl-[acyl-carrier protein]. It has a preference for acyl groups with a carbon chain length between 4 to 16.

Search BioPortfolio:
Loading
Advertisement

Relevant Topics

Blood
Latest News Clinical Trials Research Drugs Reports Corporate
Blood is a specialized bodily fluid that delivers necessary substances to the body's cells (in animals) – such as nutrients and oxygen – and transports waste products away from those same cells.  In vertebrates, it is composed of blo...

Diagnostics
Latest News Clinical Trials Research Drugs Reports Corporate
A diagnostic test is any kind of medical test performed to aid in the diagnosis or detection of disease. For example: to diagnose diseases to measure the progress or recovery from disease to confirm that a person is free from disease Clin...

Advertisement

Searches Linking to this Article