Abstract
A widely tunable long-period grating in single-mode fiber is analyzed by use of an ultrathin cladding layer and higher-order cladding mode coupling. The numerical simulation shows that a 225-nm tuning range in the newly designed ultrathin long-period grating (cladding thickness, 35 μm) with third-order cladding mode coupling can be obtained. The analyzed tuning range is seven times wider than those of the other known long-period gratings. We believe that the proposed highly sensitive long-period grating will be widely usedas a gain-f lattening filter for ultrawideband optical amplifiers and fast tunable filters in dynamic optical communication systems.
Original language | English (US) |
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Pages (from-to) | 812-814 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 29 |
Issue number | 8 |
DOIs | |
State | Published - Apr 15 2004 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics