The fibered reliable PPLN & PPLT mixers are ideal wavelength converters for SHG, SFG, DFG & OPA configurations. The mixers could be integrated with TEC/Peltier, various filters, photodiodes, Polarization Maintaining Fiber (PM Fiber), WDM couplers (coupling two very different wavelengths into one fiber) and special WDM filters (>80dB filtering ratio to improve signal/noise ratio) to match different pumps (CW & pulsed) and power up to mega Watts within UV to Middle IR wavelength range (355-5000nm).