This Letter reports on a large mode area pixelated Bragg fiber in which some high refractive index rods were replaced by boron-doped rods that allows polarization maintaining behavior while keeping single-mode behavior. The realized all-solid fiber has a core diameter of 35 µm. The fundamental mode is circular with a 25 µm mode field diameter around 1 µm wavelength, and the polarization extinction ratio reaches 30 dB. Finally, this fiber is single-mode and bendable up to a 20 cm radius with fundamental mode losses lower than 0.3 dB/m.

中文翻译：

---

保偏和单模大模面积像素化布拉格光纤

这封信报道了一个大模面积像素化的布拉格光纤，其中一些高折射率棒被掺硼棒替代，该棒可以保持偏振态并保持单模态。所实现的全固态光纤的纤芯直径为35 µm。基本模式是圆形的，具有25 µm的模式场直径，波长约为1 µm，偏振消光比达到30 dB。最后，这种光纤是单模的，可弯曲到20 cm的半径，其基本模损耗低于0.3 dB / m。