| 摘要(英) |
In this study, the structure of asymmetric adiabatic coupler (AAC) is designed using the concept of Stimulated Raman Adiabatic Passage (STIRAP), and applied it on the lithium niobate(LiNbO3) with the titanium diffused waveguides to become a polarization beam splitter. We designed the structure into two parts to split TE and TM polarization. Our goal is to achieve the broadband polarization beam splitter by using a two-stage structure to separate two different polarized lights. Before the fabrication process, we do the simulation part. In the simulation process, first step we use 1550 nm as the center wavelength to simulate TE and TM polarization in different structures. Second step, based on our previous simulation, we apply an adiabaticity engineering method to optimize the waveguide system configuration to achieve a broadband polarization beam splitter. Finally, we use a TE-polarized 775 nm laser as the pump to examine the structure to make sure the pump will be spatially filtered from the cross-polarized signal and idler. Furthermore, we fabricated such an AAC chip to measure the experimental result.
We used the standard lithography process and titanium diffusion process to fabricate the AAC chip in a 51 mm long, 25 mm wide, and 0.5 mm thick LiNbO3 crystal.
In the measurement result, we had a good-fitting result with the simulation process. It can be found a bandwidth of >120 nm can be achieved in this unique Ti:LiNbO3 polarization beam splitter at a power splitting ratio of >95% for both polarization modes, which is to the best of our knowledge the broadest bandwidth ever reported in integrated optical LiNbO3 polarization beam splitters. |
| 參考文獻 |
[1] Miller, Stewart E. "Integrated optics: An introduction." Bell System Technical Journal 48.7 (1969): 2059-2069.
[2] Marcatili, Enrique AJ. "Dielectric rectangular waveguide and directional coupler for integrated optics." Bell System Technical Journal 48.7 (1969): 2071-2102.
[3] 楊松霖，「以週期性晶疇極化反轉鈦擴散鈮酸鋰波導晶片作為偏振可調定向耦合器之研究」，國立中央大學光電所碩士論文，2013。
[4] Shani, Yosi, et al. "Integrated optic adiabatic devices on silicon." IEEE Journal of quantum Electronics 27.3 (1991): 556-566.
[5] Adar, R., et al. "Adiabatic 3-dB couplers, filters, and multiplexers made with silica waveguides on silicon." Journal of lightwave technology 10.1 (1992): 46-50.
[6] Solehmainen, Kimmo, et al. "Adiabatic and multimode interference couplers on silicon-on-insulator." IEEE Photonics Technology Letters 18.21 (2006): 2287-2289.
[7] Donnelly, J., N. DeMeo, and G. Ferrante. "Three-guide optical couplers in GaAs." Journal of Lightwave Technology 1.2 (1983): 417-424.
[8] Lahini, Yoav, et al. "Effect of nonlinearity on adiabatic evolution of light." Physical review letters 101.19 (2008): 193901.
[9] Della Valle, G., et al. "Adiabatic light transfer via dressed states in optical waveguide arrays." Applied Physics Letters 92.1 (2008): 011106.
[10] Zachariasen, W. H. "Skr."Norske Vid-Ada., Oslo, Mat. Naturv4 (1928).
[11] Jackel, Janet L., C. E. Rice, and J. J. Veselka. "Proton exchange for high?index waveguides in LiNbO3." Applied Physics Letters41.7 (1982): 607-608.
[12] 黃光旭，「三通道鈦擴散式鈮酸鋰波導絕熱耦合器之研究」，國立中央大學光電所碩士論文，2014。
[13] Chung, Hung-Pin, et al. "Asymmetric adiabatic couplers for fully-integrated broadband quantum-polarization state preparation." Scientific reports 7.1 (2017): 16841.
[14] Vitanov, Nikolay V., et al. "Laser-induced population transfer by adiabatic passage techniques." Annual review of physical chemistry 52.1 (2001): 763-809.
[15] Shore, Bruce W. "Picturing stimulated Raman adiabatic passage: a STIRAP tutorial." Advances in Optics and Photonics 9.3 (2017): 563-719.
[16] Gaubatz, U., et al. "Population transfer between molecular vibrational levels by stimulated Raman scattering with partially overlapping laser fields. A new concept and experimental results." The Journal of Chemical Physics 92.9 (1990): 5363-5376.
[17] Chung, H. P., et al. "Adiabatic light transfer in titanium diffused lithium niobate waveguides." Optics express 23.24 (2015): 30641-30650.
[18] Paspalakis, Emmanuel. "Adiabatic three-waveguide directional coupler." Optics communications 258.1 (2006): 30-34.
[19] Schneider, Vitor Marino, and Haroldo T. Hattori. "Wavelength insensitive asymmetric triple mode evolution couplers." Optics communications 187.1-3 (2001): 129-133.
[20] 楊詩遠，「電光非週期性晶疇極化反轉鈮酸鋰定向耦合器」，國立中央大學光電所碩士論文，2017
[21] Sun, Lizhong, and Gar Lam Yip. "Analysis of metal-clad optical waveguide polarizers by the vector beam propagation method." Applied optics 33.6 (1994): 1047-1050.
[22] Cao, Liang, et al. "Adiabatic couplers in SOI waveguides." Conference on Lasers and Electro-Optics. Optical Society of America, 2010. |
[Endnote RIS 格式]
[相關文章]
[文章引用]
[完整記錄]
[館藏目錄]
[檢視]
plurk
funp
live
udn
HD
myshare
netvibes
friend
youpush
delicious
baidu
Google bookmarks
del.icio.us
hemidemi
facebook
twitter
google
reddit