LN15-22CFH Lithium Niobate Integrated Optical Multi-Function Chip

LN15-22CFH Lithium Niobate Integrated Optical Multi-Function Chip

Supplier
Sgfusionchip
Part Number
LN15-22CFH
Category
Optical Crystals
Origin
China

On the polished surface of a lithium niobate (LiNbO₃) crystal, a low-loss single-polarization Y-branch pattern is fabricated using selective proton exchange to achieve optical splitting/combining and polarizing/analyzing functions. Electrodes are fabricated on both arms of the branch; externally applied electrical signals can independently adjust the phase of light transmitted through the two branch waveguides, enabling the device to perform signal processing. The end face of the optical fiber and the end face of the LiNbO₃ chip adopt an angled coupling technique to reduce optical back-reflection at the interface and decrease residual intensity modulation. The polarization-maintaining fiber pigtail is precisely aligned to the axis to reduce polarization crosstalk in the pigtail.

Specification Snapshot
Insertion Loss Li [T=25°C / RT]
≤3.5 dB
Half-Wave Voltage Vπ [T=25°C]
≤4.2 V
Bandwidth B [T=25°C]
≥300 MHz
Package Type
Metal
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Overview

On the polished surface of a lithium niobate (LiNbO₃) crystal, a low-loss single-polarization Y-branch pattern is fabricated using selective proton exchange to achieve optical splitting/combining and polarizing/analyzing functions. Electrodes are fabricated on both arms of the branch; externally applied electrical signals can independently adjust the phase of light transmitted through the two branch waveguides, enabling the device to perform signal processing. The end face of the optical fiber and the end face of the LiNbO₃ chip adopt an angled coupling technique to reduce optical back-reflection at the interface and decrease residual intensity modulation. The polarization-maintaining fiber pigtail is precisely aligned to the axis to reduce polarization crosstalk in the pigtail.

Specifications

ParameterValue
Center Wavelength λc [T=25°C]1550±20 nm
Insertion Loss Li [T=25°C / RT]≤3.5 dB
Splitting Ratio D [T=25°C]48/52~52/48
Polarization Crosstalk KP [T=25°C / RT]≤-30.0 dB
Min. Polarization Crosstalk KP [T=25°C]≤-25.0 dB
Insertion Loss Variation over Temperature ΔLi [-45°C~+70°C / During full-temperature testing, short-circuit or connect 100KΩ resistor between electrode terminals]≤0.4 dB
Splitting Ratio Variation over Temperature ΔD [-45°C~+70°C / During full-temperature testing, short-circuit or connect 100KΩ resistor between electrode terminals]≤2 %
Half-Wave Voltage Vπ [T=25°C]≤4.2 V
Waveform Linearity Error Wd [T=25°C]≤1/250
Bandwidth B [T=25°C]≥300 MHz
Intensity modulation coefficient Mir [T=25°C]≤2/1000
Package TypeMetal
Dimensions (L×W×H)30 mm × 16 mm × 5 mm
Fiber TypeInput: Φ80/165 μm / Output: Φ80/165 μm
Fiber Length L≥1.2 m

Applications

Fiber Optic Gyroscope (FOG) Systems Coherent Detection Fiber Sensors Other Fiber Sensing Fields

Key Features

Operating Wavelength: 1550 nm High Polarization Extinction Ratio via LiNbO₃ APE waveguide Low Insertion Loss & High Return Loss Minimized Back-Reflection with precision angle-polished fiber coupling Low Half-Wave Voltage (Vπ) achieved by push-pull electrode design Polarization-Maintaining Fiber Operation in fast-axis mode Operating Temperature Range: -45℃ to +70℃ Storage Temperature Range: -55℃ to +85℃

Datasheet

Product Datasheet
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Supplier Information

Sg
Sgfusionchip
View Supplier →
SG FusionChip Technology Co.,Ltd, established in August 2021 in China's Optics Valley (Wuhan), serves as the strategic foothold of Shanghai Aoshi Control Technology Co., Ltd. in Central China. The company specializes in the R&D, design, production, and sales of specialized active devices, fiber optic coils, and high-end equipment. Its products are widely applied in fiber lasers, fiber sensing, gyroscopic inertial navigation, specialized national defense, academic research, new energy, and quantum technology. Leveraging its parent company's technological expertise in fiber optic gyroscopes, modulators, and detectors, SG FusionChip has achieved comprehensive capabilities in sensing optics, boasting nationally leading R&D capabilities and industrialized production capacity.

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LN15-22CFH Lithium Niobate Integrated Optical Multi-Function Chip
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