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Numerical Simulation of the Self-Imaging at Different Cascaded Optical Fiber Specifications | ||
| Engineering and Technology Journal | ||
| Article 14, Volume 40, Issue 2, 2022, Pages 412-421 PDF (1.88 M) | ||
| DOI: 10.30684/etj.v40i2.2236 | ||
| Authors | ||
| Shahad I. Younus* 1; Anwaar A Al-Dergazly2; Abdulla K. Abass3 | ||
| 1Laser and Optoelectronic Engineering Dept., University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq | ||
| 2Laser and Optoelectronic Engineering Department, Al-Naharain University, Baghdad, Iraq. | ||
| 3Laser and Optoelectronic Engineering Dept., University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq. | ||
| Abstract | ||
| Cascaded optical fiber single mode-no core-single mode fiber (SNS) attracted attention for being the base of various photonic devices. These devices are used in optical communication, fiber sensors, and fiber laser technology. The effect of variable NCF specifications, length, diameter, external refractive index (ERI), propagating wavelength on the self-imaging position, and the multimode interference (MMI) is studied. The study aims to simulate and analyze cascaded optical fiber by using the finite element beam envelope method (BEM). To the best of our knowledge, this is the first report that studied the self-imaging in cascaded optical fiber longitudinally by using BEM. The NCF length is important in determining the coupled out intensity and peak transmission wavelength. The field in the cascaded fiber is simulated for single and multi-wavelengths to evaluate the maximum transmission and study the structure's tunability. A tunable filter is simulated, where varying the length of the NCF about 0.6 mm produces a wavelength shift of about 40 nm. The BEM is effective in studying the field propagation in large guiding photonic devices | ||
Highlights | ||
The BEM is effective in studying the field propagation in large guiding photonic devices. | ||
| Keywords | ||
| Beam envelope method Cascaded optical fiber; Multimode interference Self-imaging position | ||
| References | ||
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