SMALL-DIAMETER POLARIZATION MAINTAINING OPTICAL FIBRE

• Main Authors: DAN, RONG, ZHAO, LEI, LUO, WENYONG, MO, QI, LEI, QIONG, KE, YILI, KANG, ZHIWEN, HU, FUMING, LIU, ZHIJIAN
• Format: Patent
• Language: Chinese; English; French
• Published: 14.07.2016
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

Disclosed is a small-diameter polarization maintaining optical fibre, which relates to the field of special optical fibres. The small-diameter polarization maintaining optical fibre comprises a quartz optical fibre (5); the periphery thereof is provided with an inner coating (6) and an outer coating (8); the interior of the quartz optical fibre (5) is provided with an optical fibre core layer (1) and a quartz cladding (2); two stress zones (4) are arranged between the optical fibre core layer (1) and the quartz cladding (2); a buffer coating (7) is arranged between the inner coating (6) and the outer coating (8); the periphery of each stress zone (4) is provided with a buffer layer (3) which is concentric with the stress zone (4); when a working wavelength of a small-diameter polarization maintaining optical fibre is 1310 nm, the attenuation thereof reaches less than 0.5 dB/km, and the crosstalk reaches -35 dB/km; and when the working wavelength of the small-diameter polarization maintaining optical fibre is