Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Charles S. Koehler"'
Publikováno v:
Journal of Lightwave Technology. 19:753-758
This paper reports a novel launch scheme for coupling light into the skew rays of a graded index fiber. This is accomplished by utilizing a diffractive optical element in conjunction with a single mode fiber to mode match a graded index fiber. Result
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::493dba0d9e20f199c4ede34c4b542468
https://doi.org/10.1109/50.923489
https://doi.org/10.1109/50.923489
Publikováno v:
Optics letters. 24(9)
We demonstrate an innovative method for fabrication of high-spatial-frequency grating structures. This technique makes use of the near-field diffraction patterns from computer-generated phase holograms for lithographic fabrication of grating structur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47e37e79afd9c16a6dea7e4b23811aa1
https://pubmed.ncbi.nlm.nih.gov/18073796
https://pubmed.ncbi.nlm.nih.gov/18073796
Publikováno v:
Optoelectronic Interconnects VII; Photonics Packaging and Integration II.
Graded index fiber has a limited bandwidth due to defects introduced in the fiber manufacturing process. In this paper, an alternative launch technique is presented using a diffractive element to excite specific modes in a fiber to maximize the bandw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2724377c971be2cdf71cfd460417917c
https://doi.org/10.1117/12.384422
https://doi.org/10.1117/12.384422
Autor:
John E. Childers, Eric G. Johnson, Michael M. Johnson, John Barnett Hammond, Charles S. Koehler, Thomas J. Suleski
Publikováno v:
SPIE Proceedings.
Most laser projectors for LADAR systems are limited to small scan angles as they utilize acousto-optic devices, spatial light modulators, or fine-steering mirrors for beam steering. Additionally, the projected beam is usually circular and Gaussian. I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a85220e5a7ce3364fd26af0ace845fc
https://doi.org/10.1117/12.351634
https://doi.org/10.1117/12.351634
Autor:
Eric G. Johnson, Jared D. Stack, Thomas J. Suleski, Charles S. Koehler, Aravinda Kar, Wen Guo, John Barnett Hammond
Publikováno v:
Diffractive and Holographic Technologies, Systems, and Spatial Light Modulators VI.
Standard laser welding practices are limited by the intensity profile of the beam and spot size. The introduction of Diffractive Optical Elements (DOE) to the welding process allows for new beam shapes that are better suited to the welding process. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f593e7b14c3bd7dcd890f7a3353a6831
https://doi.org/10.1117/12.349328
https://doi.org/10.1117/12.349328
Autor:
Hongtao Han, Jared D. Stack, Eric G. Johnson, Charles S. Koehler, Jay Mathews, Alan D. Kathman
Publikováno v:
SPIE Proceedings.
Silicon v-groove structures have been utilized for passive positioning of optical fiber for fiber optic and opto- electronic applications. In this paper, we will present our results of using micro-machined silicon v-groove arrays to passively align o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2f592fdb546212f11929a019a5d9602
https://doi.org/10.1117/12.348318
https://doi.org/10.1117/12.348318