Youchao Jiang, Yuzhen Zhao, Yongfu Su, Mengjuan Qin, Yafan Su, Shiying Xiao, Wenhua Ren, Guobin Ren, Fengping Yan
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引用次数: 0
Abstract
The fiber with ring-core structure (or called vortex fiber) is mainly used for transmitting orbital angular momentum (OAM) modes. When the refractive index of the core is 10-2 lower than that of the ring, a phenomenon that we named double dominant modes will appear. The double dominant modes means that one common dominant mode HE11 exists in the ring area, and the other one dominant mode HE12 exists in the core area (can be regard as the quasi-fundamental mode here) of the fiber. The mode effective index difference between HE11 and HE12 is very large and can reach near 1 × 10-2. Through measuring the fiber Bragg grating (FBG), it can be found that the two dominant modes produce strong self-coupling reflection peaks without cross coupling reflection. These performances are different from common two-mode fibers.
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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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