Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Stefan Kefer"'
Publikováno v:
Photonics, Vol 11, Iss 5, p 397 (2024)
Polarization states define a fundamental property in optics. Consequently, polarization state characterization is essential in many areas of both field industrial applications and scientific research. However, a full identification of space-variant S
Externí odkaz:
https://doaj.org/article/27112fddb0b24a068159e7dd94b0b6cf
Publikováno v:
Photonics, Vol 9, Iss 4, p 234 (2022)
This contribution demonstrates photonic crystal waveguides generated within bulk planar sapphire substrates. A femtosecond laser is used to modify the refractive index in a hexagonal pattern around the pristine waveguide core. Near-field measurements
Externí odkaz:
https://doaj.org/article/222540c4614c476b919ea952e4f4e16e
Publikováno v:
Sensors, Vol 20, Iss 19, p 5452 (2020)
This article proposes and demonstrates a robust microstructure-based fiber-to-chip coupling scheme for planar Bragg grating devices. A polymer planar Bragg grating substrate is manufactured and microstructured by means of a micromilling process, whil
Externí odkaz:
https://doaj.org/article/820024387d864bb7bf423763d743ce31
Publikováno v:
Sensors, Vol 19, Iss 19, p 4101 (2019)
Flexible epoxy waveguide Bragg gratings are fabricated on a low-modulus TPX™ polymethylpentene polyolefin substrate for an easy to manufacture and low-cost optomechanical sensor pad providing exceedingly multipurpose application potentials. Rectang
Externí odkaz:
https://doaj.org/article/954cc41709ec49c6b47ea2ece8792bc4
Publikováno v:
Laser-based Micro- and Nanoprocessing XVII.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ace646a6d9d632b082e67d03460fd636
https://doi.org/10.1117/12.2648758
https://doi.org/10.1117/12.2648758
Publikováno v:
Organic Photonic Materials and Devices XXV.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6907fe260ac86ac33dda62f39583d44
https://doi.org/10.1117/12.2648723
https://doi.org/10.1117/12.2648723
Autor:
Yong Zhou, Wenbin Hu, Yongxin Ye, Jingjing Wang, Jixiang Dai, Minghong Yang, Ralf Hellmann, Stefan Kefer
Publikováno v:
Advanced Sensor Systems and Applications XII.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::593646435a6c20f57ff4f9e4051f25aa
https://doi.org/10.1117/12.2643877
https://doi.org/10.1117/12.2643877
Autor:
Kay Bischoff, Stefan Kefer, Alexander Wienke, Ludger Overmeyer, Stefan Kaierle, Cemal Esen, Ralf Hellmann
Publikováno v:
Optics Letters. 48:1778
We demonstrate and discuss the integration of Bragg gratings in aerosol-jetted polymer optical waveguides, produced in the optical assembly and connection technology for component-integrated bus systems (OPTAVER) process. By using a femtosecond laser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b9e1faad44b8be19c46f0dae6352bdb
https://doi.org/10.1364/ol.481801
https://doi.org/10.1364/ol.481801
Publikováno v:
Materials. 15:6233
Sapphire is a robust and wear-resistant material. However, efficient and high-quality micromachining is still a challenge. This contribution demonstrates and discusses two novels, previously unreported approaches for femtosecond laser-based micromach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::082e4474e582eb05d6e4dab3ac173672
https://doi.org/10.3390/ma15186233
https://doi.org/10.3390/ma15186233
Publikováno v:
SMSI 2021 - Sensors and Instrumentation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e27eedd9f04029e8ab633e10caec88fe
https://doi.org/10.5162/smsi2021/b3.1
https://doi.org/10.5162/smsi2021/b3.1