TiO2 ultrafast all-optical devices

TiO2超快全光器件

• 批准号: 1201976
• 负责人: Eric Mazur
• 金额: $ 37.5万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-07-01 至 2015-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1201976&HistoricalAwards=false
• 关键词: TiO2; ultrafast; optical; devices

The objective of this research is to develop on-chip microphotonic devices for future telecommunication bandwidth and computing needs. The approach exploits recent advances in TiO2 photonic nanowires to build novel all-optical modulation, switching, and logic devices.Professor Eric Mazur is an expert in nonlinear optics and pioneer of both silica nanowires and TiO2 photonics. He proposes to leverage TiO2-photonics technology to realize devices for all-optical switching applications within the communications octave (800?1700 nm). TiO2 balances a strong optical nonlinearity with low two-photon absorption, a high refractive index, and wide transparency not achievable in silicon, silica, or chalcogenide glass. These properties enable lithographically defined nanoscale waveguides with huge effective nonlinearities (100,000 times that of silica). The proposed TiO2 Sagnac interferometers are small ( 0.3 mm2), efficient ( 10 pJ), and capable of ultra-high bit-rate all-optical logic ( 1Tb/s). This research will usher in a new paradigm of devices capable of operating across widely spaced communication bands.Beyond miniaturized photonic devices, this proposal will support current collaborations developing integrated quantum optical devices, optical frequency combs, and biological sensors. TiO2 is both inexpensive and scalable, expediting its adoption into society. This work will educate and train future multidisciplinary scientists and engineers through research-based education. Professor Mazurs work with local high schools, NSF-sponsored programs, and the high representation of women in his research group will broaden participation of underrepresented groups. Finally, this work will be broadly disseminated to the public using the group?s well-established program integrating outreach and public education with research.

本研究的目的是开发芯片上的微光子器件，以满足未来电信带宽和计算的需求。该方法利用了TiO 2光子纳米线的最新进展来构建新型全光调制，开关和逻辑器件。Eric Mazur教授是非线性光学专家，也是二氧化硅纳米线和TiO 2光子学的先驱。他建议利用TiO 2光子技术实现通信倍频程（800？1700 nm）。TiO 2平衡了强光学非线性与低双光子吸收、高折射率和宽透明度，这在硅、二氧化硅或硫族化物玻璃中是无法实现的。这些特性使得光刻定义的纳米级波导具有巨大的有效非线性（是二氧化硅的100，000倍）。所提出的二氧化钛Sagnac干涉仪是小（0.3平方毫米），高效（10 pJ），并能够超高比特率的全光逻辑（1 Tb/s）。这项研究将开创一种能够在宽间隔通信波段上工作的新器件模式。除了小型化光子器件之外，这项提议将支持目前开发集成量子光学器件、光频梳和生物传感器的合作。TiO 2既便宜又可扩展，加速了其在社会中的应用。这项工作将通过以研究为基础的教育，教育和培训未来的多学科科学家和工程师。Mazurs教授与当地高中，NSF赞助的项目合作，他的研究小组中女性的高代表性将扩大代表性不足的群体的参与。最后，这项工作将广泛传播给公众使用组？的完善计划整合推广和公共教育与研究。