Phase-locking of 19-core Yb3+ - doped optical fibre

Bulletin of the Polish Academy of Sciences. Technical Sciences

D. DoroszFaculty of Electrical Engineering, Bialystok University of Technology, 45d Wiejska St., 15-351 Bialystok, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  M. KochanowiczFaculty of Electrical Engineering, Bialystok University of Technology, 45d Wiejska St., 15-351 Bialystok, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  A. Zaj?cFaculty of Electrical Engineering, Bialystok University of Technology, 45d Wiejska St., 15-351 Bialystok, PolandInstitute of Optoelectronics, Military University of Technology, 2 Kaliskiego St., 00-908 Warszawa, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Faculty of Electrical Engineering, Bialystok University of Technology, 45d Wiejska St., 15-351 Bialystok, Poland

关键词: Keywords: multicore optical fibre;    fibre lasers;    ytterbium ions;   

DOI  :  10.2478/v10175-011-0044-8

学科分类：工程和技术（综合）

来源: Polska Akademia Nauk * Centrum Upowszechniania Nauki / Polish Academy of Sciences, Center for the Advancement of Science

【 摘 要 】

The supermode generation in a multicore optical fibre laser can be realised by phase-locking of radiation inside of the fibre. The model proposed by authors implies the achievement of supermode generation by exchanging radiation between the cores during the development of the laser action. The analysis of the impact of coupling value between the cores on phase radiation of particular emitters was considered. In the paper the phase-locking of 19-core optical fibre doped with Yb3+ ions is presented. The analysis of material and geometrical parameters of the active 19 -core optical fibre and phase deviation on the beam quality factor of the laser beam in the far-field diffraction region has been analysed. The beam quality factor of the manufactured multicore fibre equals BQF = 0.71, V = 2.4, d = 18 μm. As a result of the conducted analysis a double-clad 19 - cores optical fibre doped with ytterbium ions has been designed and fabricated and its luminescence spectra and far-field diffraction pattern have been measured. Registered in the experiment in MOFPA system far-field pattern showed centrally located peak of relatively high radiation intensity together with smaller side-lobes, and as such was similar to the pattern which had been obtained numerically.

【 授权许可】

Unknown