Research on photonic signal processing devices for photonic IP-routing by using marine-biopolymer DNA-surfactant complex films

利用海洋生物聚合物DNA-表面活性剂复合薄膜进行光子IP路由的光子信号处理装置的研究

• 批准号: 14550304
• 负责人: YOSHIDA Junichi
• 金额: $ 2.24万
• 依托单位: Chitose Institute of Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550304/
• 关键词: photonic IP-routing; photonic networks; photonic devices; optical logic gate; polymers; optical waveguide; nonlinearity; photocromism; 偏波依存性; スピロピラン; 波長変換

Recently, DNA-surfactant complexes have attracted much attention due to their functionality produced by the doping of various organic dyes. Especially, the photochromic effect in DNA-surfactant complexes have been expected to add a new functionality, such as ultra-fast optical switching, logic circuits, memory, etc., for next generation lightwave systems.With the aim of clarifying capability of such materials, we have studied optical characteristics, such as refractive indices, absorbance and fluorescence intensity, and photochromic properties, of spiropyran-doped DNA-cetyltrimethilammonium (OTMA) complex films, which have been derived from marine biopolymers. It was found that absorption and fluorescence spectral intensity of those films strongly depend on the DNA concentration, while the refractive index showed very small changes. The change is due to the molecular structure change by the photochromic nature of spiropyran. We have made a preliminary study on switching characteristics of the spiropyran doped DNA-CTMA film. By using the photochromic nature of the spiropyran, an entry data written by 360 nm lights can be readout as a signal of 620 nm lights when a 520 nm light is irradiated on the film. Fundamental operation was confirmed with transition times of several tens millisecond. Although much precise measurement should be necessary, these results indicated potential use of DNA-CTMA films.Furthermore, we tested the reproducibility of the photochromic change of the spiropyran doped DNA-CTMA films for more than 300 times of the on-off cycle, and confirmed no degradation in the fluorescence intensity.

近年来，DNA-表面活性剂复合物因其通过掺杂各种有机染料而产生的功能性而备受关注。特别是，DNA-表面活性剂复合物中的光致变色效应有望为下一代光波系统添加新的功能，例如超快光开关、逻辑电路、存储器等。旨在阐明此类材料的性能，我们研究了源自海洋生物聚合物的螺吡喃掺杂 DNA-十六烷基三甲基铵 (OTMA) 复合薄膜的光学特性，如折射率、吸光度和荧光强度以及光致变色特性。研究发现，这些薄膜的吸收和荧光光谱强度强烈依赖于 DNA 浓度，而折射率变化非常小。这种变化是由于螺吡喃的光致变色性质导致分子结构发生变化。我们对螺吡喃掺杂DNA-CTMA薄膜的开关特性进行了初步研究。利用螺吡喃的光致变色性质，当520nm光照射到膜上时，可以将360nm光写入的条目数据读出为620nm光的信号。基本操作已通过数十毫秒的转换时间得到确认。尽管需要进行更精确的测量，但这些结果表明了 DNA-CTMA 薄膜的潜在用途。此外，我们测试了螺吡喃掺杂的 DNA-CTMA 薄膜在超过 300 次开关循环下的光致变色变化的再现性，并且证实荧光强度没有下降。

项目成果

王麗莉, 張公倹, 小林壮一, 吉田淳一: "Nonlinear optical materials derived from biopolymer(DNA)-surfactant-Azo dye complex"Proceedings of Asia Pasific Optical and Wireless Communications Conference (October 2002, Shanghai, China). 4905-68. (2002)

Lili Wang、Gongjun Zhang、Soichi Kobayashi、Junichi Yoshida：“源自生物聚合物（DNA）-表面活性剂-偶氮染料复合物的非线性光学材料”亚太光学和无线通信会议论文集（2002 年 10 月，中国上海）4905-68。 （2002）

王麗莉, 張公儉, 吉田淳一他(分担執筆): "Nanotechnology toward the Organic Photonics (p373-384を分担執筆)"GooTech社. 384 (2002)

Lili Wang、Gongyan 张、Junichi Yoshida 等（特约作者）：“有机光子学纳米技术（特约作者 p373-384）” GooTech Inc. 384 (2002)

王麗莉, 張公倹, 吉田淳一他(分担執筆): "Nanotechnology toward the Organic Photonics (p373-384を執筆担当)"GooTech社. 384 (2002)

Lili Wang、Gongjun 张、Junichi Yoshida 等人（撰稿人）：“有机光子学纳米技术（作者为 p373-384）”GooTech Inc. 384 (2002)

王麗莉, 張公儉, 小林壮一, 吉田淳一他: "Nonlinear optical materials derived from biopolymer(DNA)-surfactant-Azo dye complex"Proceedings of Asia Pasific Optical and Wireless Communications Conference, October 2002, Shanghai, (China). 4905-68. (2002)

Lili Wang，Gongyan Zhang，Soichi Kobayashi，Junichi Yoshida，et al.：“来自生物聚合物（DNA）-表面活性剂-偶氮染料复合物的非线性光学材料”，亚太光无线通信会议论文集，2002年10月，上海，（中国） ）4905-68（2002）。

J.Yoshida, L.Wang, S.Kobayashi, G.Zhang, et al.: "Optical properties of photochromic-compound-doped marine-biopolymer DNA-surfactant films for switching applications."Proc.SPIE Optoelectronics 2004, SPIE Photonic West 2004, Jan.2004, San Jose, USA.. Vol.5

J.Yoshida、L.Wang、S.Kobayashi、G.Zhang 等人：“用于开关应用的光致变色化合物掺杂海洋生物聚合物 DNA 表面活性剂薄膜的光学特性。”Proc.SPIE Opto electronics 2004，SPIE Photonic West