skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Cross two photon absorption in a silicon photonic crystal waveguide fiber taper coupler with a physical junction

Abstract

Cross two photon absorption in silicon is characterized using a tapered fiber photonic crystal silicon waveguide coupler. There is a physical junction between the tapered fiber and the waveguide constituting a stand-alone device. This device is used to obtain the spectrum for cross two photon absorption coefficient per unit volume of interaction between photons of nondegenerate energy. The corresponding Kerr coefficient per unit volume of interaction is also experimentally extracted. The thermal resistance of the device is also experimentally determined and the response time of the device is estimated for on-chip all-optical signal processing and data transfer between optical signals of different photon energies.

Authors:
;  [1]
  1. Electrophysics department, University of Southern California, Los Angeles, California 90089 (United States)
Publication Date:
OSTI Identifier:
22412949
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; CRYSTALS; ELECTRIC CONTACTS; FIBERS; KERR EFFECT; OPTICS; PHOTONS; SILICON; THERMAL CONDUCTIVITY; WAVEGUIDES

Citation Formats

Sarkissian, Raymond, E-mail: RaymondSark@gmail.com, and O'Brien, John. Cross two photon absorption in a silicon photonic crystal waveguide fiber taper coupler with a physical junction. United States: N. p., 2015. Web. doi:10.1063/1.4905615.
Sarkissian, Raymond, E-mail: RaymondSark@gmail.com, & O'Brien, John. Cross two photon absorption in a silicon photonic crystal waveguide fiber taper coupler with a physical junction. United States. doi:10.1063/1.4905615.
Sarkissian, Raymond, E-mail: RaymondSark@gmail.com, and O'Brien, John. 2015. "Cross two photon absorption in a silicon photonic crystal waveguide fiber taper coupler with a physical junction". United States. doi:10.1063/1.4905615.
@article{osti_22412949,
title = {Cross two photon absorption in a silicon photonic crystal waveguide fiber taper coupler with a physical junction},
author = {Sarkissian, Raymond, E-mail: RaymondSark@gmail.com and O'Brien, John},
abstractNote = {Cross two photon absorption in silicon is characterized using a tapered fiber photonic crystal silicon waveguide coupler. There is a physical junction between the tapered fiber and the waveguide constituting a stand-alone device. This device is used to obtain the spectrum for cross two photon absorption coefficient per unit volume of interaction between photons of nondegenerate energy. The corresponding Kerr coefficient per unit volume of interaction is also experimentally extracted. The thermal resistance of the device is also experimentally determined and the response time of the device is estimated for on-chip all-optical signal processing and data transfer between optical signals of different photon energies.},
doi = {10.1063/1.4905615},
journal = {Journal of Applied Physics},
number = 3,
volume = 117,
place = {United States},
year = 2015,
month = 1
}
  • A single photon source plays a key role in quantum applications such as quantum computers and quantum communications. Epitaxially grown quantum dots are one of the promising platforms to implement a good single photon source. However, it is challenging to realize an efficient single photon source based on semiconductor materials due to their high refractive index. Here we demonstrate a direct fiber coupled single photon source with high collection efficiency by employing a photonic crystal (PhC) waveguide and a tapered micro-fiber. To confirm the single photon nature, the second-order correlation function g{sup (2)}(τ) is measured with a Hanbury Brown-Twiss setup.more » The measured g{sup (2)}(0) value is 0.15, and we can estimate 24% direct collection efficiency from a quantum dot to the fiber.« less
  • The development of small sized laser operating above room temperature is important in the realization of optical integrated circuits. Recently, micro-lasers consisting of photonic crystals (PhCs) and whispering gallery mode cavities have been demonstrated. Optically pumped laser devices could be easily designed using photonic crystal-slab waveguides (PhC-WGs) with an air-bridge type structure. In this study, we observe lasing at 1.3μm from two-photon pumped InAs-quantum-dots embedded GaAs PhC-WGs above room temperature. This type of compact laser shows promise as a new light source in ultra-compact photonics integrated circuits.
  • Cited by 28
  • We present a unified framework for resonant absorption in periodic arrays of high index semiconductor nanowires that combines a leaky waveguide theory perspective and that of photonic crystals supporting Bloch modes, as array density transitions from sparse to dense. Full dispersion relations are calculated for each mode at varying illumination angles using the eigenvalue equation for leaky waveguide modes of an infinite dielectric cylinder. The dispersion relations along with symmetry arguments explain the selectivity of mode excitation and spectral red-shifting of absorption for illumination parallel to the nanowire axis in comparison to perpendicular illumination. Analysis of photonic crystal band dispersionmore » for varying array density illustrates that the modes responsible for resonant nanowire absorption emerge from the leaky waveguide modes.« less
  • We experimentally demonstrate a photonic crystal (PC) microcavity side coupled to a W1.05 photonic crystal waveguide fabricated in silicon-on-sapphire working in mid-IR regime at 3.43 μm. Using a fixed wavelength laser source, propagation characteristics of PC waveguides without microcavity are characterized as a function of lattice constant to determine the light line position, stop gap, and guided mode transmission behavior. The resonance of an L21 PC microcavity coupled to the W1.05 PCW in the guided mode transmission region is then measured by thermal tuning of the cavity resonance across the source wavelength. Resonance quality factor ∼3500 is measured from the temperaturemore » dependency curve.« less