Fiberhome Telecommunication Technologies Co., Ltd

Fiberhome Telecommunications Technologies Co., Ltd.

Wuhan Fiberhome Ruiguang Technology Co., Ltd

Fuming Hu

Wenyong Luo

Wei Chen

Lei Zhao

Peng Hu

Shiyu Li

Qi Mo

Yili Ke

Dongxiang Wang

Zhijian Liu

Qiong Lei

Rong Dan

Zhiwen Kang

Daoyu Lei

Wenjun Huang

Disclosed is a small-diameter polarization maintaining optical fiber, which relates to the field of special optical fibers. The small-diameter polarization maintaining optical fiber comprises a quartz optical fiber (); the periphery thereof is provided with an inner coating () and an outer coating (); the interior of the quartz optical fiber () is provided with an optical fiber core layer () and a quartz cladding (); two stress zones () are arranged between the optical fiber core layer () and the quartz cladding (); a buffer coating () is arranged between the inner coating () and the outer coating (); the periphery of each stress zone () is provided with a buffer layer () which is concentric with the stress zone (); when a working wavelength of a small-diameter polarization maintaining optical fiber is 1310 nm, the attenuation thereof reaches less than 0.5 dB/km, and the crosstalk reaches &#x2212;35 dB/km; and when the working wavelength of the small-diameter polarization maintaining optical fiber is 1550 nm, the attenuation thereof reaches less than 0.4 dB/km, and the crosstalk reaches &#x2212;30 dB/km. The optical fiber not only has excellent stability characteristics of attenuation and crosstalk, but also has the excellent stability characteristic of long-term operation, and can provide a better optical fiber ring for research on a high-precision optical fiber gyroscope, thereby laying the foundation for the development directions of miniaturization and high precision of the optical fiber gyroscope.

Small-diameter polarization maintaining optical fiber

A large mode field active optical fiber and manufacture method thereof is provided. The large mode field active optical fiber is formed by drawing a fiber core (), a quartz glass internal cladding (), a quartz glass outer cladding (), and a coating (). The quartz glass internal cladding (), the quartz glass outer cladding (), and the coating () are sequentially coated on the outer surface of the fiber core (). The fiber core () is formed by depositing, melting, and shrinking the tetrachlorosilane doped with rare earth ions in a quartz glass tube. The refractive index of the fiber core () is a graded refractive index, and the section parameter a thereof is 1&#x2266;&#x3b1;&#x2266;3. The appearance of the quartz glass inner cladding () is regular multi-prism shaped. The large mode field active optical fiber provides an approximate single mode output, increases the capacity of bearing the laser power for the active optical fiber, increases the quality of the light beam of the output laser, avoids the problem that there is a hollow ring in the output laser, increases the reliability of the high power fiber laser, increases the utilization efficiency of the raw materials, and reduces the manufacture cost.

Large mode field active optical fiber and manufacture method thereof

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Wuhan, China

Fuming Hu