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Journal article

Laser written waveguides to the sample edge

Abstract:
A method is presented for the fabrication of femtosecond laser written waveguides in glass to remove the need for polishing substrates after processing. It is shown that by amplitude masking the fabrication laser beam near the sample edge and increasing the pulse energy, it is possible to write waveguides that are not affected by edge aberrations and display mode profiles well matched to single mode fiber. Results are presented for different depths in fused silica and borosilicate glass substrates. The transmission from fiber to photonic circuit is significantly improved for situations where it is not possible to polish glass substrates after laser writing, creating new opportunities in photonic packaging.
Publication status:
Published
Peer review status:
Peer reviewed

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Files:
Publisher copy:
10.1364/ol.590085

Authors

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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
ORCID:
0000-0001-6678-4993
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Oxford college:
St Hugh's College
Role:
Author
ORCID:
0000-0002-9525-8981
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Oxford college:
New College
Role:
Author
ORCID:
0000-0003-1688-259X


More from this funder
Funder identifier:
https://ror.org/028y4g372
Grant:
NACB-SE02-P01


Publisher:
Optica Publishing Group
Journal:
Optics Letters More from this journal
Volume:
51
Issue:
6
Pages:
1626-1629
Publication date:
2026-03-12
Acceptance date:
2026-02-24
DOI:
EISSN:
1539-4794
ISSN:
0146-9592
Pmid:
41824727


Language:
English
Pubs id:
2391532
Local pid:
pubs:2391532
Source identifiers:
W7131208893
Deposit date:
2026-03-31
ARK identifier:

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