Highland group is a China-based high-tech enterprise specializing in advanced Fiber Bragg Grating (FBG) design, fabrication, and volume manufacturing. With multiple granted invention and utility-model patents, we deliver precision-written grating solutions for fiber laser, telecom, and optical sensing applications worldwide.

Our core product lines include:

• 1510–1600 nm Uniform FBGs & FBG Arrays — C/L-band WDM filters, EDFA gain flattening, and quasi-distributed FBG sensing chains

• 1064 nm Chirped Fiber Gratings (CFBG) — dispersion compensation and pulse stretching/compression for Yb fiber lasers and CPA systems

• 980 nm High–Low Reflectivity Grating Pairs — HR/OC cavity mirrors for 980 nm seed lasers and external-cavity pump modules

• 974 nm / 976 nm Pump Wavelength-Locking FBGs — stabilizing pump diodes for EDFA and Yb-doped fiber lasers with narrow-linewidth, temperature-resistant performance

From UV-side-write to femtosecond-laser inscription, our process covers SMF-28, HI980, HI1060, PM980, and polyimide-coated fibers with fully customizable reflectivity, bandwidth, and apodization profiles. Every grating is spectrum-tested and mechanically proof-tested to Telcordia-grade standards.