Archive for 7月 2009
Polishing for WG and FA
Core pitch Measuring for FA
Bonding adhesive
Optical Splitter和Fiber Array盖板
Packaging and testing for PLC devices
Planar optical Splitter chip
飞阳科技成立于2004年，是中美合资的高科技型企业，其核心管理和技术团队来自美国硅谷。总部位于成都市西南航空港经济开发区。第一期建设完成的5000平方米办公大楼及8000平方米世界一流工业厂房及相关设备已于2008年全面投入使用。飞阳专业致力于以PLC平面波导技术为核心的大规模研发、生产和销售，拥有自己的PLC专利技术。主要产品包括PLC光分路器芯片(Splitter Chip)、BOSA、TOSA、WDM PON、Single PD、VOA、WINC等相关产品。
环境试验设备
Researchers Create An Optical Transistor From A Single Molecule
Researchers Create An Optical Transistor From A Single Molecule
July 7, 2009
ETH Zurich researchers have successfully created an optical transistor from a single molecule. This has brought them one step closer to an optical computer.
Internet connections and computers need to be ever faster and more powerful nowadays. However, conventional central processing units (CPUs) limit the performance of computers, for example because they produce an enormous amount of heat. The millions of transistors that switch and amplify the electronic signals in the CPUs are responsible for this. One square centimeter of CPU can emit up to 125 watts of heat, which is more than ten times as much as a square centimeter of an electric hotplate.
Photons instead of electrons
This is why scientists have been trying for some time to find ways to produce integrated circuits that operate on the basis of photons instead of electrons. The reason is that photons do not only generate much less heat than electrons, but they also enable considerably higher data transfer rates.
Although a large part of telecommunications engineering nowadays is based on optical signal transmission, the necessary encoding of the information is generated using electronically controlled switches. A compact optical transistor is still a long way off. Vahid Sandoghdar, Professor at the Laboratory of Physical Chemistry of ETH Zurich, explains that, "Comparing the current state of this technology with that of electronics, we are somewhat closer to the vacuum tube amplifiers that were around in the fifties than we are to today’s integrated circuits."
However, his research group has now achieved a decisive breakthrough by successfully creating an optical transistor with a single molecule. For this, they have made use of the fact that a molecule’s energy is quantized: when laser light strikes a molecule that is in its ground state, the light is absorbed. As a result, the laser beam is quenched. Conversely, it is possible to release the absorbed energy again in a targeted way with a second light beam. This occurs because the beam changes the molecule’s quantum state, with the result that the light beam is amplified. This so-called stimulated emission, which Albert Einstein described over 90 years ago, also forms the basis for the principle of the laser.
Focusing on a nano scale
Jaesuk Hwang, first author of the study and a scientific member of Sandoghdar’s nano-optics group, explains that, "Amplification in a conventional laser is achieved by an enormous number of molecules." By focusing a laser beam on only a single tiny molecule, the ETH Zurich scientists have now been able to generate stimulated emission using just one molecule. They were helped in this by the fact that, at low temperatures, molecules seem to increase their apparent surface area for interaction with light. The researchers therefore needed to cool the molecule down to minus 272 degrees Celsius (minus 457.6 degrees Fahrenheit), i.e. one degree above absolute zero. In this case, the enlarged surface area corresponded approximately to the diameter of the focused laser beam.
Switching light with light
By using one laser beam to prepare the quantum state of a single molecule in a controlled fashion, scientists could significantly attenuate or amplify a second laser beam. This mode of operation is identical to that of a conventional transistor, in which electrical potential can be used to modulate a second signal.
Innovative computer still a long way off
Thus component parts such as the new single molecule transistor may also pave the way for a quantum computer. Sandoghdar says, "Many more years of research will still be needed before photons replace electrons in transistors. In the meantime, scientists will learn to manipulate and control quantum systems in a targeted way, moving them closer to the dream of a quantum computer."
SOURCE: ETH Zurich
国内FA厂家
国内PLC厂家
易飞扬的产品主线为
l 热插拨 光收发模块系列(MCU SFP ，BIDI SFP ，10G XFP,10G XENPAK,10G X2,SFP+, SGMII SFP, DWDM/CWDM SFP,DWDM XFP,电口SFP等)
l FTTX系列产品解决方案(平面波导光分路器,EPON/GPON OLT/ONU光收发模块,GPON ONT子系统等)
成立于2004年.易飞扬目前拥有国内一流的技术团队和从光基础元件到光网络产品的垂直整合一体化生产线．是深圳市科技局认定的高新技术企业．产品凭借一致性，完整性，可靠性，兼容性目前已深入全球市场．
2、武汉光迅科技股份有限公司
武汉光迅科技股份有限公司的前身是1976年成立的邮电部固体器件研究所。 2001年，原固体器件研究所改制成立武汉光迅科技有限责任公司；2004年，依法整体变更为武汉光迅科技股份有限公司，注册资金1亿2千万元人民币, 现有员工1300余名。公司位于武汉中国光谷，主要从事光无源器件 光通信子系统以及光通信仪表的研究，开发，生产，销售和技术服务。产品包括光纤放大器、光电子系统、薄膜滤波器件、光波导器件、微光学器件，光纤器件，光通信仪表等。
3、奥康光通器件（中山）有限公司公司拥有十余年的专业光无源器件生产技术及经验的积淀，产品线涵盖：光隔离器，光耦合器，光环行器，光开关，WDM（CWDM，DWDM），保偏系列产品等，同时在原无限光产品技术上，无锡爱沃富进行了进一步的不断开发研制，丰富了新的产品系列，现有产品扩展至：PLC splitter，光波导分路器，AWG等系列产品，也于2007年下半年投入批量生产, 公司还可根据客户的要求生产各种特殊性能指标的器件。
上海海建通信技术有限公司集研究、生产、销售为一体，生产各种型号和规格的光分路器、光纤连接器、耦合器、热缩管和室内软光缆，为了保证产品质量我们引进了美国、日本、台湾的生产设备和检测设备，并代理经销多种型号的收发器、熔接器、ODF和仪器仪表等。
9、南京华脉光纤技术有限公司
Widder 