Gebrehiwot Tesfay Zeweldi, Nasrollah Karampour, Martin Rochette
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引用次数: 0
Abstract
We present the first ZBLAN-based polarization-dependent optical fiber coupler (OFC). The polarization extinction ratio (PER) reaches 2.5 dB/4.0 dB at the through-port/cross-port of the single-mode OFC. With an unpolarized light input, the OFC provides a coupling ratio of 73.5%/26.5% at the through-port/cross-port, with an excess loss of 1.47 dB at a wavelength of 1.918 μm. The OFC is used as the polarization-dependent element combined with nonlinear polarization evolution that triggers the pulsation of a mode-locked fiber laser. This approach generates fundamental solitons with a duration of 1.83 ps at a wavelength of 1.918 μm. The soft-glass OFC supports a power of at least 320 mW without damage. The polarization-dependent ZBLAN OFC is expected to play an important role in mid-infrared (MIR) fiber optics.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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