Abstract
A very compact (80 - 100 μm2) integrated power splitting devices with two outputs (1 × 2), four outputs (1 × 4) and six outputs (1 × 6) channel has been designed, simulated and optimized for Telecommunication purpose with T-Junction, Y-Junction, PC line defect waveguides integrated with multimode interference block (PCLD-MMI) and multiple line defect PC waveguides (MLDPCW) configurations. The optical modeling of these proposed structures was investigated by finite difference time domain (FDTD) simulation. With the optimization of the parameters (Hole Radius, R = 0.128 μm, Input Diameter, D = 1.02 μm, Input wavelength, λ = 1.55 μm, Substrate Reflective Index, nsub = Si(1.52), Photonic Crystal Material, npcs = InAs(3.45), and Rectangular crystal structure), 1 × 2 for Y-Junction (100%), 1 × 4 for T-Junction (92.8%) and 1 × 6 configuration for MLDPCW (81%) show maximum power transmission.
Highlights
In the recent years, a lot of research has been focused on developing micro and nano photonic devices by using Photonic Crystals (PCs)
A very compact (80 - 100 μm2) integrated power splitting devices with two outputs (1 × 2), four outputs (1 × 4) and six outputs (1 × 6) channel has been designed, simulated and optimized for Telecommunication purpose with T-Junction, Y-Junction, PC line defect waveguides integrated with multimode interference block (PCLD-MMI) and multiple line defect PC waveguides (MLDPCW) configurations
In order to improve the powertransmission and output spectrum we have investigated two new designs where one is (c) PC line defect waveguides are integrated with a multimode interference (MMI) block and multiple line defect PC waveguides (MLPCW) for 1 × 2, 1 × 4, 1 × 6 power splitting applications
Summary
A lot of research has been focused on developing micro and nano photonic devices by using Photonic Crystals (PCs). From the idea of controlling light by means of Photonic Crystal (PC) has led to many proposals and implementations for novel devices including different types of power splitters has generated wide interests in the communication field This is possible only for periodic variation of the refractive index causes photonic band gap and artificially introduced defects to divide the input power into the output channels without significant reflection or radiation losses with compact in size. In MLPCW scheme, we have investigated the three versions which are a combination of three, five and seven line defect waveguides These two structures are more compact than the previous design but relatively broad spectrum. Among those structures Y-junction based 1 × 2 power splitter was found best with 100% transmission and splitting. The structure can be applied to communication systems and be integrated with other PC based devices
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