Related Experiment Video
Updated: Mar 15, 2026
07:39
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
7.3K
Miniature Surface Plasmon Polariton Amplitude Modulator by Beat Frequency and Polarization Control
Cheng-Wei Chang1, Chu-En Lin2, Chih-Jen Yu3
1Department of Materials Science and Engineering, National Tsing Hua University, 101, Section 2, Kuang Fu Road, Hsinchu 30013, Taiwan.
Scientific Reports
|August 26, 2016
Summary
We developed a miniature surface plasmon polariton amplitude modulator (SPPAM) for compact optical devices. This novel device offers two modulation types, enabling applications in nanosensors and nanocircuits.
Area of Science:
- Photonics and Nanotechnology
- Optoelectronics
Background:
- Miniaturization of optical modulators is crucial for developing compact devices.
- Surface plasmon polaritons (SPPs) offer unique properties for nanoscale optical applications.
Purpose of the Study:
- To present a miniature surface plasmon polariton amplitude modulator (SPPAM).
- To demonstrate two distinct modulation mechanisms within the SPPAM.
Main Methods:
- Fabrication of a chip-based device for directing and interfering SPPs.
- Utilizing a Zeeman laser to encode angular-frequency differences for modulation.
- Employing a polarization generator to vary polarization states for modulation.
Main Results:
- The SPPAM achieved modulation controlled by angular-frequency difference (1.66 MHz beat frequency).
- The SPPAM demonstrated modulation via polarization state variation (0.5-10 kHz rotation frequencies).
- A normalized extinction ratio of 100 was achieved for the plasmonic structure.
Conclusions:
- The miniature SPPAM provides effective beat-frequency and polarization-controlled amplitude modulation.
- This device advances integrated nanophotonic devices, including ultrasensitive nanosensors and nanocircuits.
