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PPLN RPE Waveguide

Lithium niobate optical waveguides utilize proton exchange methods: Annealed proton-exchange (APE) replaces lithium ions with hydrogen via benzoic acid reaction, followed by annealing to restore nonlinearity. Reverse proton exchange (RPE) reintroduces lithium ions to optimize hydrogen distribution and mode symmetry. Combined with quasi-phase matching (QPM) through periodic ferroelectric domain polarization, the Periodic Poled Lithium Niobate (PPLN) RPE waveguide achieves 0.1dB/cm propagation loss and 0.5dB fiber coupling loss at 1550nm, attaining world-class technical specifications.

Key words:

Lithium Niobate Crystal Components

Classification:

Lithium Niobate Crystal Components

WhatsApp:

+8619863680321

Email:

sales@kaxinoptic.com

Product inquiry

Applications

Quantum Key Distribution System

Laser Radar

Optical Sensing

Laser Display

Key Features

Available for SHG/SFG/DFG nonlinear frequency conversion

High efficiency coupling between opticalfiber and waveguide

High conversion efficiency

High long-term stability

SPECIFICATIONS

	Paramaters	Unit	Spec.
Optical	Signal Wavelength	nm	Custom
	Propagation Loss	dB/cm	≈0.1
	Coupling Loss	dB	≈0.5
	Conversion Efficiency	%	≥60
	Pump Wavelength	nm	Custom
Electrical	Thermoelectric Cooler		6V,4A maximum,Qc=15W
Mechanical	NTC Impedance@25℃	kΩ	10
Environmental	Input/Output Fiber		Custom
	Operating Temperature	℃	+10~+35
	Storage Temperature	℃	-20~+70