Related Experiment Video
Updated: May 19, 2026
12:08
Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
Published on: July 18, 2015
Perfectly notched long-period fiber grating filter based on ICP dry etching technique
1Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan.
Optics Letters
|August 3, 2012
Summary
A new inductively coupled plasma dry etching method creates perfectly notched long-period fiber gratings (NLPFG) with high precision and reduced manufacturing time. These NLPFGs show potential for tunable filters and force transducers.
Area of Science:
- Photonics and Optical Engineering
- Materials Science and Nanotechnology
Background:
- Long-period fiber gratings (LPFGs) are crucial optical components.
- Existing fabrication methods for LPFGs often face challenges in achieving precise control over grating parameters and production scalability.
Purpose of the Study:
- To introduce a novel fabrication process for precisely manufactured long-period fiber grating filters.
- To demonstrate the potential of these gratings as tunable filters and force transducers.
Main Methods:
- Utilized an inductively coupled plasma (ICP) dry etching technique for fiber grating fabrication.
- Characterized the fabricated perfectly notched long-period fiber gratings (NLPFG) for their physical and optical properties.
- Performed force-induced loss-tunable calibration to assess the sensor capabilities.
Main Results:
- Successfully fabricated NLPFGs with an exact period of 640 μm, resonant-attenuation wavelengths of 1518 nm, and a maximum resonance-attenuation of 21.79 dB.
- The ICP dry etching process yielded gratings with vertical sidewalls and smooth etched surfaces.
- Demonstrated a monotonically increasing quadratic relationship in force-induced loss-tunable calibration.
- Achieved significantly improved period precision compared to traditional corrugated LPFGs.
Conclusions:
- The proposed ICP dry etching method offers a highly precise and efficient approach for manufacturing NLPFGs.
- The fabricated NLPFGs exhibit excellent performance characteristics and superior period precision.
- NLPFGs hold significant promise for applications in loss-tunable filters and force transducers due to their precise fabrication and tunable properties.
Related Concept Videos
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
01:19Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview
In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then passed on to...