Reconstruction of extraordinary refractive index profile of O2+ ion-implanted LiNbO3 single-mode channel waveguide based on beam propagation method and image processing
✍ Scribed by Xiangzhi Liu; Fei Lu; Feng Chen; Ruifeng Zhang; Hanping Liu; Lei Wang; Gang Fu; Haisong Wang
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 372 KB
- Volume
- 274
- Category
- Article
- ISSN
- 0030-4018
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✦ Synopsis
A method bases on beam propagation method and image processing is brought forward to reconstruct the extraordinary refractive index profile of the ion-implanted single-mode channel waveguide in lithium niobate. Channel waveguide is formed by O 2+ ion implantation at three energies of (3.0, 3.6 and 4.5 MeV) and respective doses of (1.8, 2.2 and 4.8) • 10 14 ions/cm 2 in vacuum at room temperature. Only one enhanced-index mode is observed for extraordinary light at 1539 nm by prism-coupling method. TRIM'98 code is used to simulate the damage profile in channel waveguide. The modes pattern of TE and TM are measured by use of end-face coupling method.