نتایج جستجو برای: optical testing

تعداد نتایج: 598956  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1376

در اینجا امکان تصحیح اثر پراش یا جمع آوری انرژی که در اثر پراش بصورت واگراشونده، از دست میرود را با استفاده از روش مزدوج فازی اپتیکی (optical phese conjugtion)، توسط مخلوط چهار موجی تبهکن (dfwm)، بصورت عددی بررسی کرده ایم. این عمل را برای روزنه با قطرهای مختلف pcm با بهره های مختلف انجام داده ایم. با توجه به سرعت کامپیوتری که بکار گرفته شده و برنامه نرم افزاری استفاده شده و مدت اجراء برنامه، جو...

2002
Melanie Ott Shawn Macmurphy Patricia Friedberg

Presented here is the second set of testing conducted by the Technology Validation Laboratory for Photonics at NASA Goddard Space Flight Center on the twelve optical fiber ribbon cable with MTP array connector for space flight environments. In the first set of testing the commercial 62.5/125 cable assembly was characterized using space flight parameters (published in SPIE Vol. 3440 ).[1] The te...

2015
Tsung Sheng Kao

In this paper, the lensing functions and imaging abilities of a quasi-periodic nanohole array in a metal screen have been theoretically investigated and demonstrated. Such an optical binary mask with nanoholes designed in an aperiodic arrangement can function as an ultra-thin planar optical lens, imaging complex structures composed of multiple light sources at tens of wavelengths away from the ...

1999
Antoine Labeyrie

As proposed in 1979 1 , standing waves of polychromatic laser light can trap atoms, molecules or larger particles to provide a free-standing reflective optical surface. Such mirrors must be fabricated in space and may in principle reach sizes beyond 10m, using techniques related to optical tweezers and atom traps. Laboratory testing in vacuum tanks is becoming possible. Diode lasers having adeq...

2006
Durdu Ö. Güney David A. Meyer

We demonstrate the design of an integrated conditional quantum teleportation circuit and a readout circuit using a two-dimensional photonic crystal single chip. Fabrication and testing of the proposed quantum circuit can be accomplished with current or near future semiconductor process technology and experimental techniques. The readout part of our device, which has potential for independent us...

2009

Splicing often is required to create a continuous optical path for transmission of optical pulses from one fiber length to another. The three basic fiber interconnection methods are: de-matable fiber-optic connectors, mechanical splices and fusion splices. De-matable connectors are used in applications where periodic mating and de-mating is required for maintenance, testing, repairs or reconfig...

Journal: :Applied optics 1966
A H Shoemaker M V Murty

It is shown that an interferometer using one scatter plate and a plane mirror is well suited for testing long focus optical systems. Stability is automatically achieved in this system because of its +1 magnification. Two methods of introducing straight fringes into the field in order to examine a nearly perfect optical system, and a method of making scatter plates to give high-contrast fringe p...

2017
D. Royer M.-H. Noroy M. Fink

In this paper we review optical methods suitable to generate and to detect elastic waves in solids without any mechanical contact. The mechanisms underlying elastic wave generation by the impact of a pulsed laser beam are outlined. The principles of optical techniques able to detect surface displacements of amplitude less than one angstrom are described. Examples of applications in domains such...

2015
Jennifer A. Holes Logan O. Mailloux Michael R. Grimaila Douglas D. Hodson

Quantum Key Distribution (QKD) is an innovative technology which exploits the laws of quantum mechanics to generate and distribute unconditionally secure shared keying material for use in cryptographic applications. However, QKD is a nascent technology where real-world systems are constructed from non-ideal components, which can significantly impact system security and performance. In this pape...

2011
Nunzio Cennamo Davide Massarotti Laura Conte Luigi Zeni

This paper reports the fabrication and testing of two configurations of optical sensor systems based on Surface Plasmon Resonance (SPR) at the interface of a liquid sample and sandwiched structures realized starting from the exposed core of a Plastic Optical Fiber (POF). The proposed geometries have proven to be suitable for measuring the refractive indexes of liquids whose refractive index fal...

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