Thermally expanded core fiber with high numerical aperture for laser-diode coupling
✍ Scribed by Yu-Cheng Lin; San-Chien Lin
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 160 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
A thermally expanded core fiber with high numerical aperture (HNA‐TEC) is demonstrated here to relax the tolerance of laser diode (LD) to fiber alignment. We experimentally clarify the dependence of mode field radius (MFR) on heating time for HNA‐TEC fiber. The MFR was expanded at the increasing rate of 0.067 μm/minute on the condition of 1100°C heat treatment. For a HNA‐TEC fiber with MFR 4.56 μm, the transverse and axial coupling tolerances were enlarged effectively by about 81% and 50%, respectively. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 979–981, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21539.