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 Telecommun...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.展开更多
A novel variable C-band radio-frequency (RF) power splitter was designed at Shanghai Institute of Applied Physics, Chinese Academy of Sciences. Using three RF impedance combiners, an H-bend, and an RF polarizer, this ...A novel variable C-band radio-frequency (RF) power splitter was designed at Shanghai Institute of Applied Physics, Chinese Academy of Sciences. Using three RF impedance combiners, an H-bend, and an RF polarizer, this new power splitter is much more compact than a traditionally designed splitter, which comprises three 3-dB hybrids. The parameters were optimized to achieve good matching and minimize reflection. Here, the RF design of the new C-band variable power splitter is presented.展开更多
A 1×8 GaAs/GaAlAs optical power splitter based on a MultiMode Interference (MMI) coupler is presented. The input and output single mode waveguides are optimized by the Discrete Spectral Index Method (DSIM) and a ...A 1×8 GaAs/GaAlAs optical power splitter based on a MultiMode Interference (MMI) coupler is presented. The input and output single mode waveguides are optimized by the Discrete Spectral Index Method (DSIM) and a moderate square spot on the output in deep etched rib waveguides is obtained. The fabrication tolerance has been analyzed by the Finite Difference Beam Propagation Method (FDBPM). The device was fabricated by the dry etching technique and the near field output obtained. The device shows polarization insensitive, large fabrication tolerance, low theoretical excess loss and low power imbalance.展开更多
An initial structure design of MMI 1×8 optical power splitters is reported.The waveguide material is Si-based SiO2 Ge-doped and deposited by PECVD method.Embedded strip structure is implied in the section design....An initial structure design of MMI 1×8 optical power splitters is reported.The waveguide material is Si-based SiO2 Ge-doped and deposited by PECVD method.Embedded strip structure is implied in the section design.By using BPM-CAD,a favorable result is obtained that this device has a sound uniformity and fairly low loss.Meanwhile,simulations of designs with certain changed parameters is also implemented for a better design configuration.展开更多
A polarization-insensitive mode-order converting power splitter using a pixelated region is presented and investigated in this paper.As TE_(0)and TM_(0)modes are injected into the input port,they are converted into TE...A polarization-insensitive mode-order converting power splitter using a pixelated region is presented and investigated in this paper.As TE_(0)and TM_(0)modes are injected into the input port,they are converted into TE_(1)and TM_(1)modes,which evenly come out from the two output ports.The finite-difference time-domain method and direct-binary-search optimization algorithm are utilized to optimize structural parameters of the pixelated region to attain small insertion loss,low crosstalk,wide bandwidth,excellent power uniformity,polarization-insensitive property,and compact size.Experimental results reveal that the insertion loss,crosstalk,and power uniformity of the fabricated device at 1550 nm are 0.57,-19.67,and 0.094 d B in the case of TE polarization,while in the TM polarization,the relevant insertion loss,crosstalk,and power uniformity are 0.57,-19.40,and 0.11 d B.Within a wavelength range from 1520 to 1600 nm,for the fabricated device working at TE polarization,the insertion loss,crosstalk,and power uniformity are lower than 1.39,-17.64,and 0.14 dB.In the case of TM polarization,we achieved an insertion loss,crosstalk,and power uniformity less than 1.23,-17.62,and 0.14 dB.展开更多
The principle of weak-confined Multimode Interference is studied, and then a 1×8 K+-Na+ ion-exchange multimode interference optical power splitter is designed and fabricated.
An MMI double-wavelength optical power splitter for both 1.55μm and 1.3μm is presented in this paper. Analysis shows that it can divide power equally for both 1.55μ m and 1.3μm.
文摘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.
基金supported by the National Natural Science Foundation of China(No.11675249)
文摘A novel variable C-band radio-frequency (RF) power splitter was designed at Shanghai Institute of Applied Physics, Chinese Academy of Sciences. Using three RF impedance combiners, an H-bend, and an RF polarizer, this new power splitter is much more compact than a traditionally designed splitter, which comprises three 3-dB hybrids. The parameters were optimized to achieve good matching and minimize reflection. Here, the RF design of the new C-band variable power splitter is presented.
基金Project Supported by National Natural Science Foundation of China Under Grant No.696770 1 2 and Major State BasicResearch Deve
文摘A 1×8 GaAs/GaAlAs optical power splitter based on a MultiMode Interference (MMI) coupler is presented. The input and output single mode waveguides are optimized by the Discrete Spectral Index Method (DSIM) and a moderate square spot on the output in deep etched rib waveguides is obtained. The fabrication tolerance has been analyzed by the Finite Difference Beam Propagation Method (FDBPM). The device was fabricated by the dry etching technique and the near field output obtained. The device shows polarization insensitive, large fabrication tolerance, low theoretical excess loss and low power imbalance.
文摘An initial structure design of MMI 1×8 optical power splitters is reported.The waveguide material is Si-based SiO2 Ge-doped and deposited by PECVD method.Embedded strip structure is implied in the section design.By using BPM-CAD,a favorable result is obtained that this device has a sound uniformity and fairly low loss.Meanwhile,simulations of designs with certain changed parameters is also implemented for a better design configuration.
基金supported by the National Natural Science Foundation of China(Nos.62275134,62234008,and 61875098)the Zhejiang Provincial Natural Science Foundation(Nos.LY20F050003 and LY20F050001)+2 种基金the Youth Science and Technology Innovation Leading Talent Project of Ningbo(No.2023QL003)the Natural Science Foundation of Ningbo(Nos.2022J099 and 202003N4159)the K.C.Wong Magna Fund in Ningbo University。
文摘A polarization-insensitive mode-order converting power splitter using a pixelated region is presented and investigated in this paper.As TE_(0)and TM_(0)modes are injected into the input port,they are converted into TE_(1)and TM_(1)modes,which evenly come out from the two output ports.The finite-difference time-domain method and direct-binary-search optimization algorithm are utilized to optimize structural parameters of the pixelated region to attain small insertion loss,low crosstalk,wide bandwidth,excellent power uniformity,polarization-insensitive property,and compact size.Experimental results reveal that the insertion loss,crosstalk,and power uniformity of the fabricated device at 1550 nm are 0.57,-19.67,and 0.094 d B in the case of TE polarization,while in the TM polarization,the relevant insertion loss,crosstalk,and power uniformity are 0.57,-19.40,and 0.11 d B.Within a wavelength range from 1520 to 1600 nm,for the fabricated device working at TE polarization,the insertion loss,crosstalk,and power uniformity are lower than 1.39,-17.64,and 0.14 dB.In the case of TM polarization,we achieved an insertion loss,crosstalk,and power uniformity less than 1.23,-17.62,and 0.14 dB.
基金This work is supported by the National Natural Science Foundation of Zhejiang providence, CHINA, No. 601130.
文摘The principle of weak-confined Multimode Interference is studied, and then a 1×8 K+-Na+ ion-exchange multimode interference optical power splitter is designed and fabricated.
文摘An MMI double-wavelength optical power splitter for both 1.55μm and 1.3μm is presented in this paper. Analysis shows that it can divide power equally for both 1.55μ m and 1.3μm.
