Near Field Probes: From Optical Fibers to Optical Nanoantennas

2007 ◽  
pp. 77-135 ◽  
Author(s):  
Eugenio Cefalì ◽  
Salvatore Patanè ◽  
Salvatore Spadaro ◽  
Renato Gardelli ◽  
Matteo Albani ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Near Field ◽  
Optical Nanoantennas

Near-Field Directive Beams From Passive and Active Asymmetric Optical Nanoantennas

2015 ◽  
Vol 21 (4) ◽  
pp. 312-323 ◽  
Author(s):  
Sawyer D. Campbell ◽  
Richard W. Ziolkowski
Keyword(s):  
Near Field ◽  
Optical Nanoantennas

scholarly journals Selectively accessing the hotspots of optical nanoantennas by self-aligned dry laser ablation

Nanoscale ◽  
2020 ◽  
Vol 12 (37) ◽  
pp. 19170-19177
Author(s):  
Christian Schäfer ◽  
Pradeep N. Perera ◽  
Florian Laible ◽  
Deirdre L. Olynick ◽  
Adam M. Schwartzberg ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Near Field ◽  
Field Enhancement ◽  
Optical Nanoantennas

Self-aligned laser ablation is demonstrated to selectively access the nano-volumes of high near-field enhancement at nanoantenna tips for functionalization.

scholarly journals Toward Nanometer-Scale Optical Photolithography:  Utilizing the Near-Field of Bowtie Optical Nanoantennas

Nano Letters ◽  
2006 ◽  
Vol 6 (3) ◽  
pp. 355-360 ◽  
Author(s):  
Arvind Sundaramurthy ◽  
P. James Schuck ◽  
Nicholas R. Conley ◽  
David P. Fromm ◽  
Gordon S. Kino ◽  
...  
Keyword(s):  
Near Field ◽  
Nanometer Scale ◽  
Optical Nanoantennas

Characterization of optical fibers using near‐field scanning optical microscopy

1994 ◽  
Vol 75 (6) ◽  
pp. 2753-2756 ◽  
Author(s):  
D. J. Butler ◽  
K. A. Nugent ◽  
A. Roberts
Keyword(s):  
Optical Microscopy ◽  
Optical Fibers ◽  
Near Field ◽  
Scanning Optical Microscopy ◽  
Near Field Scanning

Near-Field Scanning Optical Microscopy Studies of Materials and Devices

MRS Bulletin ◽  
1997 ◽  
Vol 22 (8) ◽  
pp. 27-30 ◽  
Author(s):  
J.W.P. Hsu
Keyword(s):  
Optical Microscopy ◽  
Light Source ◽  
Optical Fibers ◽  
Force Feedback ◽  
Near Field ◽  
Single Mode ◽  
Field Zone ◽  
Research Activities ◽  
Scanning Optical Microscopy ◽  
Near Field Scanning

Near-field scanning optical microscopy (NSOM) provides a means to study optical and optoelectronic properties of materials at the nanometer scale. The key to achieving resolution higher than the diffraction limit is to place a subwavelength-sized light source—e.g., an aperture—within the near-field zone of the sample. In this case, the area of the sample illuminated is determined by the aperture size and not by the wavelength (see Figure 1). An image can then be formed by moving the sample and light source with respect to each other. While the principle of near-field optics is straightforward, its realization at visible-light wavelengths was not achieved until the invention of scanning-probe techniques in the 1980s. Since Betzig et al. demonstrated in 1991 that bright subwavelength apertures can be made by tapering and metal-coating single-mode optical fibers, research activities involving NSOM have increased tremendously. The later incorporation of shear-force feedback to regulate tip-sample separation adds another strength to NSOM. Using this distance regulation, a topographic image similar to that obtained by a conventional scanning force microscope is acquired simultaneously with the optical image. This provides a way to correlate structural and physical properties at the same sample positions and greatly simplifies interpretation of the NSOM data.

Low-Loss Connection of Hybrid Fibre Optic Systems with Low Sensitivity to Wavelength

2013 ◽  
Vol 20 (4) ◽  
pp. 697-704 ◽  
Author(s):  
Krzysztof Skorupski
Keyword(s):  
Optical Fibers ◽  
Near Field ◽  
Signal Transmission ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Light Sources ◽  
Mode Field ◽  
Low Sensitivity ◽  
Comparison Of The Results ◽  
Different Diameters

Abstract This paper proposes a method for adjusting light waves propagating in systems composed of photonic fibers, light sources and detection elements. The paper presents the properties of these connections in terms of the loss of signal transmission. Different fiber core areas were analyzed, and measurements of the mode-field diameters (MFDs) of selected fiber structures are presented. The study analyzed two types of LMA (Large Mode Area) fiber structures, and the mode-field diameters of these structures were measured on the basis of the radiation distribution obtained under near-field conditions. The results are compared to the values obtained for a SMF-28 single-mode fiber. The LMA structures analyzed in the paper are characterized by low sensitivity of the MFD parameter to the length of transmitted waves, which creates the possibility of their use as intermediate fibers when connecting optical fibers of different diameters. In the wavelength range from 800 nm to 1600 nm, a 3.5% MFD change was observed for the first investigated LMA structure, and a 1% change was observed for the second. In addition, measurements of the mode-field diameters were also made using the transverse offset method for comparison of the results.

Sign in / Sign up

Export Citation Format

Share Document