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M. KAVOSH TEHRANI1,* , M. HAMI1
- Institute of Optics and Laser, Malek-Ashtar University of Technology, Shahin Shahr 83145/115, Iran
In this paper, an optimum single-mode optical coupler (power splitter) is simulated based on symmetric Y-branch comprising S-Bend Cosine waveguide with a channel profile of proton-exchanged lithium niobate. The distance between the two output waveguides is 127μm (center-to-center) which is suitable for the connection with the fibers. Since the angle of branches and their lengths affect the loss of Y-splitter, the simulations are performed for different angles and lengths. Optimum length for S-Bend Cosine waveguide is obtained and subsequently the loss of Y-splitter reaches the minimum value of 0.18 dB..
Waveguide, Optical coupler, Y-branch splitter, Proton-exchange, Lithium niobate, S-Bend Cosine.
Submitted at: Oct. 31, 2016
Accepted at: June 7, 2017
M. KAVOSH TEHRANI, M. HAMI, Design and simulation of low-loss Y-branch splitter with a channel profile of proton-exchanged lithium niobate, Journal of Optoelectronics and Advanced Materials Vol. 19, Iss. 5-6, pp. 314-318 (2017)
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