BBO (beta-BaB2O4) is an excellent non-linear crystal for frequency-doubling (SHG) of Visible and Near IR laser light, OPO/OPG/OPA pumped by ultrafast pulses of wavelengths in the Near IR to UV, and sum-frequency mixing (SFM) into the Visible to the deep UV. BBO is one of the few practical crystal for use below 500 nm in SHG and SFM

BBO crystal has broad tunability, high damage threshold, and high efficiency......


C-lens is specially designed for fiber optics usage in collimator, isolator, switch, collimator array and laser Assembly. Compared to other gradient index lens, C-lens has many advantages including low cost, low insertion loss in long working distance, wide working distance range. With our experienced optical design Engineers we also provide the designing of c-lens according to customer's requirements, beside our standard products list below......

Fiber circulator

Standard Circulator


  • Low Insertion Loss
  • Wide Band High Isolation
  • Low PDL
  • Compact In-Line Package
  • High Stability and Reliability
  • Epoxy Free Optical Path


  • Optical Amplifier
  • Metro Area Network
  • Wavelength Add / Drop
  • Dispersion Compensation

With a passionate engineer team of over 10 years of experience in crystal, glass and fiber area, Photonchina continuously supplies optical, crystal components and passive devices solution in the field of instrumentation, surveying, medical, laser and fiber communications.

Ranging from Cylindrical Lens, Spherical Lens, Penta Prism, BBO, LBO, YVO4, LiNbO3 to Fiber Isolator, Circulator, Photonchina has won the valuable trust from customers with the dedicated effort of its committed human resources and quality management system.

Productions from the first cut to final products in Photonchina maintain strict quality control thanks to the combination of the sophisticated instruments such as interferometer Zygo, spectrophotometer, goniometer and the knowledge of  ISO14001, 9001.

In the past decade, people of Photonchina have gained priceless experience in meeting and surpassing customer needs, which would certainly help them make more excellent performance in cooperating with customers worldwide in the next ten years.

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