A development of a fiber-type PLZT optical switch

光纤型PLZT光开关的研制

基本信息

批准号：
61850067
负责人：
MINAKATA Makoto
金额：
$ 4.61万
依托单位：
TOHOKU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1987
项目状态：
已结题

项目摘要

The purpose of the project is the development of fiber-type PLZT optical switches and technology. The proposed switches are composed of an optical fiber which has a groove, a block of PLZT disposed in the groove, which acts as an electric field-inducing wavelength plate , and two polarizers disposed close to or in contact with both end surfaces of the wavelength plate. Polarizer consists of alternate lamination of a metal and dielectgric (LAMIPOL). To realize the switches, we have been developed new technology, and analized and partially fabricated the optical components.1. PLZT seramics ; To decide the optimum composition and fabrication process, optical and electrical properties of PLZT fabricated under various conditions have been measured.La/Zr/Ti=9/65/35 is the best composition in the HIP method.2. PLZT micro modulator (Wavelength plate); The modulator is a ridge type (60x60x980 <micrn>m) formed by mechanical cutter and photolithography. It has about 50 MHz modulation bandwidth, 10 V switching voltage and no insertion loss.3. LAMIPOLE; The polarizer is fabricated by alternately stachking thin films of Al (-50A) and dielectgric films of SiO2 (-2000A). The conbination of Al film sputtered under the Low background pressure and SiO2 film formed by evapolation shows good characteristics such as TE loss 30 dB and TM loss 0.4 dB at 1.3 <micrn>m wavelength.4. Formation of fiber groove; To excavate the groove, a micro-rapping technique invented by NTT Lab. is very useful and powerful. We are now under training of the micro-machining.5. Analysis of a fiberf-type PLZT optical switch; In summary, this switch can be operated at a low voltage(-30V), can achive a high switching speed (more than 50 MHZ),and allows low insertion loss(-0.8 dB) and miniturization of equipment(length 100 <micrn>m), and is best suited to fiber transmission systems.

该项目的目的是开发光纤型PLZT光学开关和技术。所提出的开关由一个具有凹槽的光纤组成，该凹槽位于凹槽中，该凹槽块充当电场诱导的波长板，两个极化器与波长板的两个极端表面处置或接触。偏光层由金属和介质格（Lamipol）的替代层压组成。为了实现开关，我们已经开发了新技术，并对光学组件进行了分析和部分制造。1。 plzt seramics;为了确定最佳组成和制造过程，已经测量了在各种条件下制造的PLZT的光学和电气性能。LA/ZR/TI=9/65/35是髋关节方法中最好的组成。2。 PLZT微型调制器（波长板）；调制器是由机械切割器和光刻造影形成的脊类型（60x60x980 <micrn> m）。它具有约50 MHz调制带宽，10 V开关电压和无插入损耗3。拉米唑；偏振器是通过Al（-50a）和Sio2（-2000a）的二晶膜的交替插入薄膜制造的。在低背景压力和由蒸发形成的SIO2膜下溅射的Al膜的结合显示出良好的特征，例如te损失30 dB和TM损失0.4 dB，在1.3 <mincrn> m波长下为4。纤维凹槽的形成；要挖掘凹槽，这是NTT Lab发明的一种微型梳盖技术。非常有用和有力。现在，我们正在接受微观安排的培训。5。分析Fiberf型PLZT光学开关；总而言之，该开关可以以低压（-30V）的形式进行操作，可以实现高开关速度（超过50 MHz），并允许低插入损耗（-0.8 dB）和设备的销售（长度为100 <mincrn> m），并且最适合纤维传输系统。