Numerical simulations on stimulated raman scattering for fiber raman amplifiers and lasers using spectral methods

Download

index.pdf

Date

2007

Author

Berberoğlu, Halil

Metadata

Show full item record

Item Usage Stats

288
views

80
downloads

Optical amplifiers and lasers continue to play its crucial role and they have become an indispensable part of the every fiber optic communication systems being installed from optical network to ultra-long haul systems. It seems that they will keep on to be a promising future technology for high speed, long-distance fiber optic transmission systems. The numerical simulations of the model equations have been already commercialized by the photonic system designers to meet the future challenges. One of the challenging problems for designing Raman amplifiers or lasers is to develop a numerical method that meets all the requirements such as accuracy, robustness and speed. In the last few years, there have been much effort towards solving the coupled differential equations of Raman model with high accuracy and stability. The techniques applied in literature for solving propagation equations are mainly based on the finite differences, shooting or in some cases relaxation methods. We have described a new method to solve the nonlinear equations such as Newton-Krylov iteration and performed numerical simulations using spectral methods. A novel algorithm implementing spectral method (pseuodspectral) for solving the two-point boundary value problem of propagation equations is proposed, for the first time to the authors' knowledge in this thesis. Numerical results demonstrate that in a few iterations great accuracy is obtained using fewer grid points.

Subject Keywords

Optical fibers.

URI

http://etd.lib.metu.edu.tr/upload/3/12608986/index.pdf
https://hdl.handle.net/11511/17189

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Silicon microspheres for optical modulation applications Yüce, Emre; GÜRLÜ, Oguzhan; SERPENGÜZEL, Ali (2009-05-06) A silicon microsphere coupled to a silica optical fiber half coupler is excited using a diode laser operating at 1.55 mu m. The transmitted and the 90 degrees elastically scattered light signals are modulated with an electrical square wave applied to the silicon microsphere.
Development of D -type fiber optic sensors for detection of refractive index variation in evanescent wave field / Güleryüz, Burcu; Durucan, Caner; Aslan, Mustafa M.; Department of Metallurgical and Materials Engineering (2014) The purpose of this study is to design, construct, develop and test D-type multimode fiber optic (F/O) sensors based on evanescent wave field sensing. A comprehensive work has been performed both theoretically and experimentally using a geometrical modification approach to improve the sensors response in different manners for detecting the refractive index (RI) variations and bio-molecular interactions in aqueous environment. In this study, the D-type F/O sensors performance was improved utilizing optical w...
Wavefront Shaping Optimization Algorithms For Focusing Light Through a Multimode Fiber TABAK, MEHMET; Yüce, Emre; Department of Physics (2022-5) Optical fibers are widely used to guide optical signals. Multi-mode fibers offer a greater bandwidth when compared to single-mode counterparts. The intensity at the end of a multi-mode fiber can be affected by mode-to-mode coupling and multi-mode interference. This can reduce the signal throughput. However, the total intensity at the end of the fiber can be modulated by shaping the input wavefront and providing increased signal levels. In our study, we show that focusing light inside the optical fiber is po...
Design and development of fiber optic MEMS microphone measurement system Karaca, Ekin Muharrem; Bayram, Barış; Department of Electrical and Electronics Engineering (2019) In this thesis, fiber optic MEMS microphone measurement system is designed and demonstrated. The displacement of the sensing element of the fiber optic microphone, the membrane, together with the optical components are 3-D modeled and simulated by means of finite element methods. The parameters of the optical system under different measurement conditions are optimized according to the simulation results. Based on the simulation results, the measurement system setup is designed, constructed and functionalize...
Development of a picosecond pulsed mode-locked fiber laser Yağcı, Mahmut Emre; Altan, Hakan; Department of Physics (2013) Fiber lasers represent the state-of-the-art in laser technology and hold great promise for a wide range of applications because they have a minimum of exposed optical interfaces, very high efficiency, and are capable of exceptional beam quality. In the near future, the most important markets such as micromachining, automotive, biomedical and military applications will begin to use this technology. The scope of this thesis is to design and develop a short picosecond pulsed fiber laser using rare-earth doped ...

Citation Formats

H. Berberoğlu, “Numerical simulations on stimulated raman scattering for fiber raman amplifiers and lasers using spectral methods,” Ph.D. - Doctoral Program, Middle East Technical University, 2007.