Laser lithography technique to fabricate integrated optical elements by ion exchange in glass

1996 ◽  
Author(s):  
Vincente Moreno de las Cuevas ◽  
Jose R. Salgueiro ◽  
Carlos Montero ◽  
Xesus Prieto ◽  
Jesus Linares
Keyword(s):  
Ion Exchange ◽  
Optical Elements ◽  
Laser Lithography ◽  
Integrated Optical ◽  
Lithography Technique

Reflective integrated optical elements produced by ion exchange in glass

1998 ◽  
Vol 37 (27) ◽  
pp. 6375
Author(s):  
Xesús Prieto ◽  
Jesús Liñares
Keyword(s):  
Ion Exchange ◽  
Optical Elements ◽  
Integrated Optical

scholarly journals Active and Quantum Integrated Photonic Elements by Ion Exchange in Glass

2021 ◽  
Vol 11 (11) ◽  
pp. 5222
Author(s):  
Giancarlo C. Righini ◽  
Jesús Liñares
Keyword(s):  
Ion Exchange ◽  
Optical Waveguides ◽  
Exchange Process ◽  
Experimental Studies ◽  
Optical Processing ◽  
Optical Modulators ◽  
Optical Elements ◽  
Ion Exchange Process ◽  
Research Activities ◽  
Integrated Optical

Ion exchange in glass has a long history as a simple and effective technology to produce gradient-index structures and has been largely exploited in industry and in research laboratories. In particular, ion-exchanged waveguide technology has served as an excellent platform for theoretical and experimental studies on integrated optical circuits, with successful applications in optical communications, optical processing and optical sensing. It should not be forgotten that the ion-exchange process can be exploited in crystalline materials, too, and several crucial devices, such as optical modulators and frequency doublers, have been fabricated by ion exchange in lithium niobate. Here, however, we are concerned only with glass material, and a brief review is presented of the main aspects of optical waveguides and passive and active integrated optical elements, as directional couplers, waveguide gratings, integrated optical amplifiers and lasers, all fabricated by ion exchange in glass. Then, some promising research activities on ion-exchanged glass integrated photonic devices, and in particular quantum devices (quantum circuits), are analyzed. An emerging type of passive and/or reconfigurable devices for quantum cryptography or even for specific quantum processing tasks are presently gaining an increasing interest in integrated photonics; accordingly, we propose their implementation by using ion-exchanged glass waveguides, also foreseeing their integration with ion-exchanged glass lasers.

Optimization of Holographic Labels for Security Applications

2019 ◽  
Vol 22 ◽  
pp. 74-83
Author(s):  
Roxana Tomescu ◽  
Catalin Parvulescu ◽  
Dana Cristea ◽  
Bogdan Bita ◽  
Brandus Comanescu ◽  
...  
Keyword(s):  
Holographic Lithography ◽  
Diffractive Optical Elements ◽  
Secret Key ◽  
Double Exposure ◽  
Optical Elements ◽  
New Approach ◽  
Security Applications ◽  
Laser Lithography ◽  
Development Step

In this paper, we propose a new approach for fabrication processes of microstructures composed of diffractive optical elements (DOE) and security elements. The holographic lithography is combined with laser lithography to obtain highly secured holographic labels for products protection. The secret key is an untraceable and hardly reproducible geometry and can be embedded in the labels or stickers to increase the level of security and diminish the possibility of products counterfeiting. In our process, the holographic structure composed of DOEs, and the key are designed separately by two authorized designers and recombined using double exposure followed by a single development step. The layout of microstructures that composes the security key are known only by the designer.

Rapid Fabrication of Micro Optical Elements Using DMD-Based Maskless Lithography Technique

2010 ◽  
Vol 146-147 ◽  
pp. 143-146 ◽  
Author(s):  
Xiao Wei Guo ◽  
Qi Ming Dong
Keyword(s):  
Low Cost ◽  
Maskless Lithography ◽  
Optical Elements ◽  
Rapid Fabrication ◽  
Lithography Technique

A low-cost microfabrication tool based on digital mirror device(DMD) is presented in this paper. The imaging principle of the system is described and the fabrication methods for binary and nonbinary micro optical elements(MOE) are also discussed in detail. It is expected to provide an understanding of MOEs fabrication using DMD-based maskless lithography technique.

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