High Nonlinear Optical Fibre

When designing the high nonlinear optical fibre (HNLF), considerations shall include the following: First, ensure a higher nonlinear coefficient for sufficient non-linear effect. Second, ensure lower loss to increase the effective length (Leff). Third, align dispersion characteristics to cater to different applications. Finally, maintain low polarization mode dispersion (PMD) in the optical fibre. For silica-based HNLF, the design of the refractive index profile plays an important role in order to meet the aforementioned requirements. In the design of HNLF, it is essential to simultaneously implement a small core effective area (Aeff), a low dispersion slope, and much smaller cut-off wavelengths than the operating wavelength.

The HNLF is independently developed and produced by YOFC, featuring a high nonlinear coefficient and a very low dispersion slope. With a flexible W-type profile design, an inner cladding with a low refractive index is set around the step-index core.

Applications

• Parametric amplification

• Wavelength conversion

• Pulse compression

• Supercontinuum source

• Light regenerator

• Discrete type (or lumped type) Raman amplifier

Characteristics

• Higher nonlinear coefficient

• Adjustable zero dispersion wavelength in S-band, C-band and L-band

• Lower loss and dispersion slope

• Small additional loss in splicing with common single-mode optical fibre

Specifications