采用“三步法”技术制造高性能的G.657单模光纤
Manufacture of high-performance G.657 single-mode optical fiber by using three-step preform technology
摘要
首先介绍了G.657单模光纤制造技术的演进情况,然后提出采用“三步法”制造G.657弯曲不敏感单模光纤的工艺技术,设计并制造出两种类型的弯曲不敏感单模光纤。其中,G.657A2光纤在弯曲半径为7.5 mm时,1 550和1 625 nm波长的弯曲损耗分别为0.063和0.136 dB,1 383和1550 nm波长的衰减系数分别为0.272和0.188 dB/km;G.657B3光纤在弯曲半径为5 mm时,1 550和1 625 nm波长的弯曲损耗分别为0.067和0.122 dB,1 383和1 550 nm波长的衰减系数分别为0.276和0.182 dB/km。测试结果表明,该“三步法”预制棒技术能够生产出高抗弯、低损耗的小弯曲半径单模光纤,该光纤的关键技术指标均优于ITU-T国际标准。
Abstract
This letter first introduces the evolution of the manufacturing technologies for G.657 single-mode optical fibers. Then it presents the “Three-Step” preform technology for manufacturing bend-insensitive G.657 single-mode fibers and designs and fabricates two types G.657 fibers, G657A2 and G.657B3. They are tested respectively. When the bending radius of G657A2 fiber is 7.5 mm, its bending losses at 1 550 and 1 625 nm wavelengths are 0.063 and 0.136 dB respectively and its attenuation coefficients at 1 383 and 1 550 nm wavelengths are 0.272 and 0.188 dB/km, while when the bending radius of G.657B3 fiber is 5 mm, its bending losses at 1 550 and 1 625 nm wavelengths are 0.067 and 0.122 dB respectively and its attenuation coefficients at 1 383 and 1 550 nm wavelengths are 0.276 and 0.182 dB/km respectively. The test results indicate that the presented technology produces high bend-resistant low-loss small bending-radius single-mode fibers and their key specifications are all better than the ITU-T G.657 standard.
陈伟, 李诗愈, 莫琦, 罗文勇, 王冬香, 柯一礼, 雷琼. 采用“三步法”技术制造高性能的G.657单模光纤[J]. 光通信研究, 2014, 40(1): 34. Chen Wei, Li Shiyu, Mo Qi, Luo Wenyong, Wang Dongxiang, Ke Yili, Lei Qiong. Manufacture of high-performance G.657 single-mode optical fiber by using three-step preform technology[J]. Study On Optical Communications, 2014, 40(1): 34.