scholarly journals Polarization Beam Splitter Based on Si3N4/SiO2 Horizontal Slot Waveguides for On-Chip High-Power Applications

Sensors ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 2862 ◽  
Author(s):  
Yuxi Fang ◽  
Changjing Bao ◽  
Zhonghan Wang ◽  
Yange Liu ◽  
Lin Zhang ◽  
...  
Keyword(s):  
Power Systems ◽  
High Power ◽  
Beam Splitter ◽  
Polarization Beam Splitter ◽  
Length Ratio ◽  
Coupling Length ◽  
Slot Waveguide ◽  
Strip Waveguide ◽  
On Chip ◽  
Fabrication Tolerance

In this paper, we propose an Si3N4/SiO2 horizontal-slot-waveguide-based polarization beam splitter (PBS) with low nonlinearity for on-chip high-power systems. The coupling length ratio between the quasi-TE and quasi-TM modes (LTE/LTM) was optimized to 2 for an efficient polarization splitting. For the single-slot design, the coupling length of the PBS was 281.5 μm, while the extinction ratios (ER) of the quasi-TM and quasi-TE modes were 23.9 dB and 20.8 dB, respectively. Compared to PBS based on the Si3N4 strip waveguide, the coupling length became 22.6% shorter. The proposed PBSs also had a relatively good fabrication tolerance for an ER of >20 dB. For the multi-slot design, the coupling length of the PBS was 290.3 μm, while the corresponding ER of the two polarizations were 24.0 dB and 21.0 dB, respectively. Furthermore, we investigated the tradeoff between the ER and coupling length for the optimized PBSs with single slot or multiple slots.

scholarly journals A Novel Gold Film-Coated V-Shape Dual-Core Photonic Crystal Fiber Polarization Beam Splitter Covering the E + S + C + L + U Band

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 496
Author(s):  
Yuwei Qu ◽  
Jinhui Yuan ◽  
Shi Qiu ◽  
Xian Zhou ◽  
Feng Li ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Beam Splitter ◽  
Gold Film ◽  
Polarization Beam Splitter ◽  
Length Ratio ◽  
Coupling Length ◽  
Propagation Length ◽  
Crystal Fiber ◽  
Dual Core

In this paper, a novel gold film-coated V-shape dual-core photonic crystal fiber (V-DC-PCF) polarization beam splitter (PBS) based on surface plasmon resonance effect is proposed. The coupling lengths of the X-polarization (X-pol) and Y-polarization (Y-pol) and the corresponding coupling length ratio of the proposed V-DC-PCF PBS without gold film and with gold film are compared. The fiber structure parameters and thickness of the gold film are optimized through investigating their effects on the coupling lengths and coupling length ratio. As the propagation length increases, the normalized output powers of the X-pol and Y-pol of the proposed V-DC-PCF PBS at the three wavelengths 1.610, 1.631, and 1.650 μm are demonstrated. The relationships between the extinction ratio (ER), insertion loss (IL) and wavelength for the three splitting lengths (SLs) 188, 185, and 182 μm are investigated. Finally, it is demonstrated that for the proposed V-DC-PCF PBS, the optimal SL is 188 μm, the ILs of the X-pol and Y-pol are less than 0.22 dB, and the splitting bandwidth (SB) can cover the E + S + C + L + U band. The proposed V-DC-PCF PBS has the ultra-short SL, ultra-wide SB, and ultra-low IL, so it is expected to have important applications in the laser, sensing, and dense wavelength division multiplexing systems.

Broad bandwidth and large fabrication tolerance polarization beam splitter based on multimode anti-symmetric Bragg sidewall gratings

2017 ◽  
Vol 42 (19) ◽  
pp. 3912 ◽  
Author(s):  
Huiye Qiu ◽  
Jianfei Jiang ◽  
Ping Yu ◽  
Jianyi Yang ◽  
Hui Yu ◽  
...  
Keyword(s):  
Beam Splitter ◽  
Polarization Beam Splitter ◽  
Broad Bandwidth ◽  
Fabrication Tolerance

scholarly journals High-extinction-ratio silicon polarization beam splitter with tolerance to waveguide width and coupling length variations

2016 ◽  
Vol 24 (6) ◽  
pp. 6586 ◽  
Author(s):  
Yong Zhang ◽  
Yu He ◽  
Jiayang Wu ◽  
Xinhong Jiang ◽  
Ruili Liu ◽  
...  
Keyword(s):  
Beam Splitter ◽  
Extinction Ratio ◽  
Polarization Beam Splitter ◽  
Coupling Length ◽  
High Extinction Ratio ◽  
Waveguide Width

Compact cross-slot waveguide polarization beam splitter using a sandwich-type coupler

2020 ◽  
Vol 59 (5) ◽  
pp. 1447 ◽  
Author(s):  
Shengbao Wu ◽  
Zhicheng Zhao ◽  
Ting Feng ◽  
X. Steve Yao
Keyword(s):  
Beam Splitter ◽  
Polarization Beam Splitter ◽  
Slot Waveguide ◽  
Sandwich Type

scholarly journals Design and Simulation Investigation of Si3N4 Photonics Circuits for Wideband On-Chip Optical Gas Sensing around 2 µm Optical Wavelength

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2513
Author(s):  
Natnicha Koompai ◽  
Papichaya Chaisakul ◽  
Pichet Limsuwan ◽  
Xavier Le Roux ◽  
Laurent Vivien ◽  
...  
Keyword(s):  
Spectral Range ◽  
Gas Sensing ◽  
Slot Waveguide ◽  
Optical Coupling ◽  
Optical Wavelength ◽  
Light Coupling ◽  
Strip Waveguide ◽  
Optical Gas Sensing ◽  
On Chip ◽  
Multi Mode

We theoretically explore the potential of Si3N4 on SiO2 waveguide platform toward a wideband spectroscopic detection around the optical wavelength of 2 μm. The design of Si3N4 on SiO2 waveguide architectures consisting of a Si3N4 slot waveguide for a wideband on-chip spectroscopic sensing around 2 μm, and a Si3N4 multi-mode interferometer (MMI)-based coupler for light coupling from classical strip waveguide into the identified Si3N4 slot waveguides over a wide spectral range are investigated. We found that a Si3N4 on SiO2 slot waveguide structure can be designed for using as optical interaction part over a spectral range of interest, and the MMI structure can be used to enable broadband optical coupling from a strip to the slot waveguide for wideband multi-gas on-chip spectroscopic sensing. Reasons for the operating spectral range of the system are discussed.

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