Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
We study the dynamics of chaos in a dual-port erbium-doped fiber ring laser (EDFRL). The laser consists of two erbium-doped fibers, intracavity filters at 1549.32 nm, isolators, and couplers. At both ports, the laser transitions into the chaotic regime for pump currents greater than 100 mA via the period doubling route. We calculate the largest Lyapunov exponent using Rosenstein's algorithm. We obtain positive values for the largest Lyapunov exponent (≈0.2) for embedding dimensions 5, 7, 9, and 11 indicating chaos. We compute the power spectral density of the photocurrents at the output ports of the laser. We observe a bandwidth of 12.5 GHz at both ports. This ultra-wideband nature of chaos obtained has potential applications in high-speed random number generation and communication.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/AO.56.007939 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
On-chip, inverse-designed active wavelength division multiplexer at THz frequencies.
Nat Commun
August 2025
Institute for Quantum Electronics, ETH Zürich, Zürich, Switzerland.
The development of photonic integrated components for the terahertz region has become an active and growing research field. Despite the numerous applications in this spectral range, hardware design still faces several challenges. We demonstrate an on-chip, active wavelength division multiplexer (WDM) operating at THz frequencies (> 1 THz).
View Article and Find Full Text PDFThe paper addresses the interoperability problem in heterogeneous optical frequency transfer fiber links, which requires the coexistence of equipment with different designs. As we point out, a key component is the repeater laser station, which, for its operation, requires ensuring design-specific relationships between the frequencies of the optical signals at its ports. Ensuring their interoperability requires dedicated optical frequency shifters that adapt to existing differences.
View Article and Find Full Text PDFGraphene-Loaded LiNbO Directional Coupler: Characteristics and Potential Applications.
Nanomaterials (Basel)
July 2025
Engineering Management Department, Jinan Puli Water Supply Engineering Co., Ltd., Jinan 250024, China.
This study explores the impact of graphene integration on lithium niobate (LiNbO, LN) ridge waveguides and directional couplers, focusing on coupling efficiency, polarization-dependent light absorption, and temperature sensitivity. Experimental and simulation results reveal that graphene loading significantly alters the effective mode refractive index and enhances waveguide coupling, enabling precise control over light transmission and power distribution. The temperature-dependent behavior of graphene-LN structures demonstrates strong thermal sensitivity, with notable changes in output power ratios between cross and through ports under varying temperatures.
View Article and Find Full Text PDFSimulation and performance analysis of plasma switch for microwave amplification in T shaped circular waveguide in the S band.
Sci Rep
July 2025
Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, 1983969411, Iran.
In this work, the control and amplification of microwaves in a T-shaped circular waveguide in the S-band using a plasma switch are simulated using Computer Simulation Technology (CST) software and the Finite-Difference Time-Domain (FDTD) method. We present an innovative configuration that integrates a plasma switch into a T-shaped circular waveguide, enabling real-time control of plasma parameters to enhance microwave reflection and amplification. We determine the ratio of RF frequency to argon plasma frequency in the collisional regime and investigate the interaction, resonance, and complete reflection of electromagnetic waves.
View Article and Find Full Text PDFOn-chip amorphous terahertz topological photonic interconnects.
Sci Adv
June 2025
Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore.
Valley Hall photonic crystals (VPCs) offer the potential for creating topological waveguides capable of guiding light through sharp bends on a chip, enabling seamless integration with functional components in compact spaces, making them a promising technology for terahertz topological photonic integrated circuits. However, a key limitation for terahertz-scale integrated VPC-based devices has been the absence of arbitrary bend interconnects, as traditional VPC-designs restricted to principal lattice axes (i.e.
View Article and Find Full Text PDF