PPLN Waveguide

PPLN Waveguide

Proton exchange and metal diffusion are the two most common methods of preparing a lithium niobate waveguide; with these processes the refractive-index difference between the waveguide and the substrate is small and the optical confinement is weak. Based on the ridge waveguide structure of lithium niobate single-crystal film (LNOI), the index difference between core and cladding is greatly increased and the confinement is enhanced, so the nonlinear effect of the waveguide is improved. The ridge waveguide also has a higher optical damage threshold, making it suitable for high power frequency-conversion devices.

Features

• Available for SHG / SFG / DFG nonlinear frequency conversion
• High efficiency coupling between optical fiber and waveguide
• High conversion efficiency
• High damage threshold
• High long-term stability

Applications

• High power single frequency laser
• Quantum key distribution system
• Laser radar
• Optical sensing

Tell us your wavelength, bandwidth and fiber type and we will quote the right configuration.