Dynamics of Ultra-short Pulse Interaction with Linear and Nonlinear Fibre Bragg Gratings

2006 ◽  
Author(s):  
Vijay Janyani ◽  
Ana Vukovic ◽  
Trevor Benson ◽  
John Paul ◽  
Phillip Sewell
Keyword(s):  
Short Pulse ◽  
Bragg Gratings ◽  
Linear And Nonlinear ◽  
Fibre Bragg Gratings ◽  
Ultra Short Pulse ◽  
Pulse Interaction

scholarly journals Small fluence photosensitivity of high germanium doped core optical fibers from 266nm UV irradiation

2020 ◽  
Author(s):  
Rex Xiao Tan
Keyword(s):  
Optical Fibers ◽  
Short Pulse ◽  
Bragg Gratings ◽  
Phase Mask ◽  
Refractive Index Modulation ◽  
Uv Laser ◽  
Center Wavelength ◽  
Germanium Content ◽  
Short Pulse Laser ◽  
Ultra Short Pulse

The photosensitivity of high germanium content optical fiber was investigated with reference to UV laser of 266nm center wavelength. Bragg gratings were inscribed into the fiber using scanning phase mask method with a 266nm ultra short pulse laser and refractive index modulation due to irradiation was calculated from the parameters of the resulting fiber Bragg gratings. At small fluence, the high germanium content optical fibers seemingly experience competing photosensitivity mechanisms, dissimilar to the characteristics of common photosensitive optical fibers.

Fibre Bragg Gratings in Harsh and Space Environments: Principles and applications

2019 ◽  
Author(s):  
Brahim Aissa ◽  
Emile I. Haddad ◽  
Roman V. Kruzelecky ◽  
Wes R. Jamroz
Keyword(s):  
Bragg Gratings ◽  
Space Environments ◽  
Fibre Bragg Gratings

Silicon Thinning using Ultra-Short Pulse Laser Ablation

2004 ◽  
Author(s):  
F. Beaudoin ◽  
P. Perdu ◽  
C. DeNardi ◽  
R. Desplats ◽  
J. Lopez ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Sample Preparation ◽  
Pulse Laser ◽  
Pulse Laser Ablation ◽  
Short Pulse ◽  
Special Care ◽  
Short Pulse Laser ◽  
Ultra Short Pulse ◽  
Ultra Short Pulse Laser

Abstract Ultra-short pulse laser ablation is applied to IC backside sample preparation. It is contact-less, non-thermal, precise and can ablate the various types of material present in IC packages. This study concerns the optimization of ultra-short pulse laser ablation for silicon thinning. Uncontrolled silicon roughness and poor uniformity of the laser thinned cavity needed to be tackled. Special care is taken to minimize the silicon RMS roughness to less than 1µm. Application to sample preparation of 256Mbit devices is presented.

UKP-laserbasierte Herstellung von Netzen unterschiedlicher Transmissionsgrade/USP-laser based production of meshes of different transmission degrees

2020 ◽  
Vol 110 (11-12) ◽  
pp. 787-789
Author(s):  
Marcel Simons ◽  
Till Rusche ◽  
Tobias Valentino ◽  
Tim Radel ◽  
Frank Vollertsen
Keyword(s):  
High Precision ◽  
Processing Speed ◽  
Laser Processing ◽  
Short Pulse ◽  
High Quality ◽  
Mesh Width ◽  
Variable Transmission ◽  
Ultra Short Pulse ◽  
Mesh Structures

Die Ultrakurzpuls (UKP)-laserbasierte Bearbeitung erlaubt die Herstellung von Netzstrukturen mit verschiedenen Transmissionsgraden. Vorteile der UKP-laserbasierten Herstellung der Netze liegen vor allem in der hohen Präzision und Bearbeitungsgeschwindigkeit. Die UKP-Laserbearbeitung ermöglicht die Herstellung von Netzen aus Aluminium in hoher Qualität, bezogen auf die Stegbreitenabweichung von < 8 µm, mit variablen Transmissionsgraden. Ultra-short pulse (USP) laser based processing enables the production of mesh structures with different degrees of transmission. The advantages of USP-based production of mesh structures are mainly the high precision and processing speed. USP laser processing enables the production of meshes of aluminum in high quality, with respect to the mesh width deviation of < 8 µm with variable transmission degrees.

Frequency locking using cascaded fibre Bragg gratings in OFDM systems

1996 ◽  
Vol 32 (12) ◽  
pp. 1120 ◽  
Author(s):  
C.S. Park ◽  
G.Y. Lyu ◽  
D.H. Lee
Keyword(s):  
Bragg Gratings ◽  
Ofdm Systems ◽  
Frequency Locking ◽  
Fibre Bragg Gratings
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