DocumentCode
1004372
Title
In-line optical-fibre filter for wavelength multiplexing
Author
Whalen, M.S. ; Walker, Katherine L.
Author_Institution
AT&T Bell Laboratories, Crawford Hill Laboratory, Holmdel, USA
Volume
21
Issue
17
fYear
1985
Firstpage
724
Lastpage
725
Abstract
An optical-fibre wavelength-selective directional coupler has been fabricated using evanescent-wave coupling between fibres of dissimilar core radii and refractive-index profiles. This device has a nonperiodic filter response with a bandpass of 90 nm FWHM centred around 1.22 ¿m, and has a peak coupling efficiency of 60% with an excess loss of 0.2 dB.
Keywords
band-pass filters; directional couplers; frequency division multiplexing; optical communication equipment; optical couplers; optical fibres; optical filters; bandpass filter; core radii; evanescent-wave coupling; excess loss 0.2 dB; nonperiodic filter response; optical fibre wavelength-selective directional coupler; optical-fibre filter; peak coupling efficiency; refractive-index profiles; wavelength multiplexing;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19850511
Filename
4250720
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