Journal
OPTICS COMMUNICATIONS
Volume 480, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2020.126497
Keywords
Birefringence; Coupling length; Fiber coupler; Transmission loss
Categories
Funding
- Natural National Science Foundation of China (NSFC) [61875117, 12064016]
- Science and Technology Research Project of Jiangxi Provincial Education Department, China [GJJ170185, GJJ170189]
Ask authors/readers for more resources
A new terahertz fiber directional coupler with a symmetric dual-suspended core structure is proposed in this study, which can achieve low loss and polarization-insensitive coupling length, with a wide operating bandwidth available.
In this work, a terahertz (THz) fiber directional coupler with a symmetric dual-suspended core structure has been proposed for realizing low loss and polarization-insensitive coupling length in the THz frequency region. The fiber core of the directional coupler consists of two round solid dielectric rods supported by two intersecting thin dielectric layers. Numerical simulations performed using the full-vector finite element method show that a short polarization-independent coupling length can be obtained by adjusting the geometric parameters of the fiber. Moreover, a low-loss THz fiber directional coupling performance can also be achieved at a central frequency of 1.00-THz and approximately 0.16 THz of bandwidth. For example, a coupler with a length of 0.421 cm has a transmission loss of 0.30 dB and 0.26 dB for the xand y-polarization modes, respectively.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available