Invention Grant
- Patent Title: Mode filter with refractive index modification
- Patent Title (中): 具有折射率修正的模式滤光片
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Application No.: US14348131Application Date: 2012-09-27
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Publication No.: US09360617B2Publication Date: 2016-06-07
- Inventor: Christian Voigtlaender , Jens Ulrich Thomas , Robert Williams , Stefan Nolte , Andreas Tuennermann
- Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V. , Friedrich-Schiller-Universitaet Jena
- Applicant Address: DE Munich DE Jena
- Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.,Fried-Schiller-Universitaet Jena
- Current Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.,Fried-Schiller-Universitaet Jena
- Current Assignee Address: DE Munich DE Jena
- Agency: Collard & Roe, P.C.
- Priority: DE102011114586 20110930
- International Application: PCT/EP2012/004060 WO 20120927
- International Announcement: WO2013/045097 WO 20130404
- Main IPC: G02B6/02
- IPC: G02B6/02 ; G02B6/14 ; H01S3/067 ; G02B6/036
Abstract:
The invention relates to a mode filter for reducing higher-order modes, with an optical fiber (1), which has a core (2) and a cladding (3) surrounding the latter, wherein the cladding (3) and core (2) have refractive indices that differ from one another. In order to develop an alternative to the prior art, the mode filter according to the invention is designed in such a manner that the fiber (1) has, in a transition region (4) between core (2) and cladding (3), at least one local refractive index modification region (5) which is arranged in the radially outer region of the core (2) and extends into the region of the cladding (3).
Public/Granted literature
- US20140362878A1 MODE FILTER WITH REFRACTIVE INDEX MODIFICATION Public/Granted day:2014-12-11
Information query
