Hybrid Conjoined Tube Hollow Core Antiresonant Fiber

In this paper, we proposed a hollow core antiresonant fiber, having conjoined tube cladding elements with additional negative curvature layer which presents hybrid configuration, offers very stunning performance among related fibers. The proposed hybrid conjoined tube fiber exhibits a lowest loss of 3.0×10−6 dB/m at 1430 nm by keeping a loss of ~ 4.0×10−5 dB/m over the ample bandwidth of 300 nm. It leads to a minimum surface scattering loss of 2.0×10−5 dB/m and a minimal microbending loss of 4.0×10−5 dB/m resulting in a total loss of 1.0×10−4 dB/m at 1550 nm. The proposed fiber also presents a bending loss of 1.0×10−5 dB/m at the bend radius of 7 cm along with better single mode performance having the higher order mode extinction ratio of ~ 1600 and keeps larger than 100 over the wavelength of interest. The proposed fiber may have the potential application in telecommunication systems for its promising performances.