Research on silicon-based high-index contrast optical technologies
Project/Area Number |
21360161
|
Research Category |
Grant-in-Aid for Scientific Research (B)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Electron device/Electronic equipment
|
Research Institution | Utsunomiya University |
Principal Investigator |
SHIRAISHI Kazuo 宇都宮大学, 大学院・工学研究科, 教授 (90134056)
|
Co-Investigator(Kenkyū-buntansha) |
YODA Hidehiko 宇都宮大学, 大学院・工学研究科, 准教授 (30312862)
|
Project Period (FY) |
2009 – 2012
|
Project Status |
Completed (Fiscal Year 2012)
|
Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2011: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
|
Keywords | シリコン / 光ファイバ / レンズドファイバ / 光通信 / NA / シリコンフォトニクス / シリコン細線導波路 / スポットサイズ変換 / スポットサイズ変換器 / スポットサイズ / ダウンテーパ / アップテーパ / サブ波長格子 |
Research Abstract |
Two types of spot-size converter (SSC) have been successfully realized. The polarization-insensitive vertical down taper type was easily realized with a simple process employing reactive etching technique. The process can fabricate the vertical down-taper to silicon waveguides that has horizontally up taper structure. The tunnel-coupled type was obtained by depositing a gap layer on the silicon waveguide with the horizontal up taper, and then depositing a cap layer onto it. The TM-like mode was measured to couple from Si waveguide to the cap layer, whereas the TE-like mode propagates along the Si-waveguide without coupling to the cap layer. The phenomena show that the structure operates as the polarization splitter. As far as the TM-like mode concerned, the structure operates as the SSC nicely. Also robust and high-focusing power two types of lensed fibers, HILC and plano-convex, have beensuccessfully obtained. The robustness was attained by employing commercially available fiber ferrules. Mechanically robust and user-friendly lensed fibers have been obtained. Excellent lensed fibers with a high focusing power and long working distance characteristics have been successfully obtained with the process.
|
Report
(5 results)
Research Products
(60 results)