We have updated the measurement device for the temperature coefficient of refractive index Δn/ΔT shown on our website. Upon updating, we have extended the measurement wavelength range and temperature range.

Measurement wavelength range

Before change：435.835nm ～ 1013.98nm

After change：365.015nm ～ 1550nm

Measurement temperature range

Before change： -40℃ ～ 80℃

After change： -80℃ ～ 180℃