4 research outputs found
A fractal-based fibre for ultra-high throughput optical probes
A core component of all scanning near-field optical microscopy
(SNOM) systems is the optical probe, which has evolved greatly but still
represents the limiting component for the system. Here, we introduce a
new type of optical probe, based on a Fractal Fibre which is a special class
of photonic crystal fibre (PCF), to directly address the issue of increasing
the optical throughput in SNOM probes. Optical measurements through
the Fractal Fibre probes have shown superior power levels to that of
conventional SNOM probes. The results presented in this paper suggest
that a novel fibre design is critical in order to maximize the potential of the
SNOM
All-fibre photonic crystal distributed Bragg reflector (PC-DBR) fibre laser
We describe an Er3+-doped aluminosilicate core photonic crystal fibre laser incorporating distributed Bragg reflectors written by two-photon 193nm irradiation through an optical phase mask as the feedback elements. The laser is diode pumped at 980nm and evidence of dual linewidth laser operation close to threshold is observed. However, at higher pumping levels gain competition preferentially selects one laser line. © 2003 Optical Society of America
Exposure and characterization of nano-structured hole arrays in tapered photonic crystal fibers using a combined FIB/SEM technique
This paper presents a technique to expose and characterize
nano-structured hole arrays in tapered photonic crystal fibers. Hole array
structures are examined with taper outer diameters ranging from 12.9 μm
to 1.6 μm. A combined focused ion beam milling and scanning electron
microscope system was used to expose and characterize the arrayed
air-silica structures. Results from this combined technique are presented
which resolve hole-to-hole pitch sizes and hole diameters in the order of
120 nm and 60 nm, respectively