A direct comparison of single-walled carbon nanotubes and quantum-wells based subpicosecond saturable absorbers for all optical signal regeneration at 1.55 μm

Nong, H.; Gicquel, M.; Bramerie, L.; Perrin, M.; Grillot, F.; Levallois, C.; Maalouf, A.; Loualiche, S.
February 2010
Applied Physics Letters;2/8/2010, Vol. 96 Issue 6, p061109
Academic Journal
Subpicosecond optical transmission experiments are used to compare saturable absorber (SA) based on bundled single-walled carbon nanotubes (SWNT) and iron-doped InGaAs/InP epitaxial multiple quantum wells (MQW) at 1.55 μm telecom wavelength. The SA key parameters (contrast ratio, saturation fluence, and recovery time) relevant for high speed all optical signal regeneration (AOSR) are extracted from the normalized differential transmission (NDT). Although both SA exhibit good contrast ratios, SWNT show a full signal recovery as well as a much faster response time than MQW. This original work on SA shows that SWNT are excellent candidates for future low cost AOSR.


Related Articles

  • Preface. Kowalski, Bogdan J.; Słupinski, Tomasz // Acta Physica Polonica, A.;May2011, Vol. 119 Issue 5, p3 

    An introduction is presented in which the author discusses the topics discussed within the issue including spintronics and spintronic materials, quantum wells and carbon nanotubes.

  • O-band quantum-confined Stark effect optical modulator from Ge/Si0.15Ge0.85 quantum wells by well thickness tuning. Chaisakul, Papichaya; Frigerio, Jacopo; Marris-Morini, Delphine; Vakarin, Vladyslav; Chrastina, Daniel; Isella, Giovanni; Vivien, Laurent // Journal of Applied Physics;2014, Vol. 116 Issue 19, p193103-1 

    We report an O-band optical modulator from a Ge/Si0.15Ge0.85 multiple quantum well (MQW). Strong O-band optical modulation in devices commonly operating within E-band wavelength range can be achieved by simply decreasing the quantum well thickness. Both spectral photocurrent and optical...

  • Electrical Excitation of Surface Plasmon Polaritons Using an Au Ring Grating/GaAs Quantum Well Coupling Structure. Li, Jing; Shen, Hao; Dong, Xianzi; Zhang, Yongliang; Zhao, Zhensheng; Duan, Xuanming; Meng, Xiangmin // Plasmonics;Feb2015, Vol. 10 Issue 1, p145 

    In this paper, a compatible Au ring grating/GaAs quantum well (QW) coupling structure is used to electrically excite surface plasmon polaritons (SPPs). Once current injects into QW, SPPs are directly generated at the metal/semiconductor interface and coupled to a metal ring grating. The direct...

  • Numerical investigations of a multi-walled carbon nanotube-based multi-segmented optical antenna. Cui, X.; Dong, L.; Zhang, W.; Wu, W.; Tang, Y.; Erni, D. // Applied Physics B: Lasers & Optics;Nov2010, Vol. 101 Issue 3, p601 

    Motivated by the fabrication potential of multi-walled carbon nanotube structures, we numerically investigated a paired structure consisting of two metallic spheres each grown on one end of a multi-walled nanotube. The paired two-segmented structure is capable to convert free-space radiation...

  • Resonant behavior observed in electron field emission from acid functionalized multiwall carbon nanotubes. Lyth, S. M.; Silva, S. R. P. // Applied Physics Letters;3/23/2009, Vol. 94 Issue 12, p123102 

    Acid functionalized multiwall carbon nanotube ink was deposited onto carbon fiber fabric via dip coating. Repeatable staircaselike current-field curves were observed in the field emission data. These atypical curves are attributed to resonant tunneling through localized surface states in a...

  • Carbon nanotubes: A simple approach to superlattices. Lyding, Joseph W. // Nature Nanotechnology;Sep2009, Vol. 4 Issue 9, p545 

    The article discusses research by Hyung-Joon Shin and colleagues on techniques to modulate the electronic structure of carbon nanotubes. The researchers reported that they have modulated the electronic structure of a nanotube to make quantum wells with a period below what is possible using...

  • Substrate-induced array of quantum dots in a single-walled carbon nanotube. Hyung-Joon Shin; Clair, Sylvain; Yousoo Kim; Kawai, Maki // Nature Nanotechnology;Sep2009, Vol. 4 Issue 9, p567 

    Single-walled carbon nanotubes are model one-dimensional structures. They can also be made into zero-dimensional structures; quantum wells can be created in nanotubes by inserting metallofullerenes, by mechanical cutting or by the application of mechanical strain. Here, we report that quantum...

  • A Novel Theoretical Procedure to Determine Absorption and Gain Coefficients in a Symmetric Single Step-Index Quantum Well Laser. Temız, Mustafa; Karakikinç, Özgur Önder; Ünal, Mehmet // Turkish Journal of Electrical Engineering & Computer Sciences;2008, Vol. 16 Issue 2, p133 

    If the indices nII, nI,III of the regions, the thickness 2a of the active region (AR) and the wavelength λ for a single symmetric step-index quantum well laser (SSSIQWL) are given, the normalized propagation constant (NPC) α is obtained. In this novel method, absorption and gain...

  • Detector evolution results in 'infrared retina'. Krishna, Sanjay // Laser Focus World;Mar2009, Vol. 45 Issue 3, p57 

    The article presents several detectors with a single focal-plane arrays (FPAs). High-performance cooled MWIR and LWIR detectors offers the best performance. Another class of detectors with promise for the LWIR regime is quantum-well IR (QWIPs)photodetectors intersubband devices based on...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics