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MAHMOOD SEIFOURI1,* , SAEED OLYAEE2, MARYAM AHMADVAND1
- Faculty of Electrical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran
- Nano-photonics and Optoelectronic Research Laboratory (NORLab), Shahid Rajaee Teacher Training University, Tehran, Iran
In this paper, a 23-channel arrayed waveguide grating (AWG) demultiplexer with two center wavelengths at 1550 nm and 1310 nm based on silicon nanowire has been presented. If the center wavelength is 1550 nm, the proposed structure operates as an 8-channel demultiplexer with a channel spacing of 1.6 nm and an insertion loss of 1.1 dB. Otherwise, with the center wavelength of 1310 nm, our structure behaves as a 15-channel demultiplexer with a channel spacing of 0.67 nm and an insertion loss of 1.2 dB. When tapered waveguides are introduced at both ends of all waveguides, the input, the output and the arrayed waveguides, the insertion loss reduces significantly. Therefore, transmission coefficient becomes very desirable in our structure. Simulations are carried out using the beam propagation method. Due to the minimal difference between the insertion loss of the center wavelength and the adjacent wavelengths, the spectral response of the proposed structure is relatively flat for both center wavelengths. The crosstalk values for the center wavelengths of 1550 nm and 1310 nm are respectively, -46 dB and -38 dB..
Arrayed waveguide grating, Center wavelengths, Crosstalk, Insertion loss, Silicon nanowire.
Submitted at: June 6, 2017
Accepted at: Aug. 9, 2018
MAHMOOD SEIFOURI, SAEED OLYAEE, MARYAM AHMADVAND, Arrayed waveguide grating based on Si nanowire with two center wavelengths, Journal of Optoelectronics and Advanced Materials Vol. 20, Iss. 7-8, pp. 356-362 (2018)
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