We are a leading manufacturer of innovative and high quality optical passive components. We provide our clients with a complete and integrated solution: from 400~2100nm all kind of passive optical components.Headquartered and factory are located in Shenzhen of China.ur products are widely used in: Industrial Fiber Laser, Ultrafast fiber Laser,Optical Network and Data Center, Optical Fiber Sensing, Biomedical Equipments,Test Equipment,Quantum Communication System, Lidar, Aerospace, Defense, Autonomous Vehicles. Our products cover most passive optical components. DK Photonics produces a large array of fiber-optic components such as 1064nm High Power Isolator,MM Pump Combiner,Pump Laser Protector,which using for High power fiber laser applications. Also have PM fiber pump combiner, PM circulator, PM isolator, PM tap coupler, PM WDM, in-line polarizer, and PBS for ultrafast fiber laser applications. Alao have ultra-small devices, mini isolators, mini couplers, used in optical fiber sensing, fiber optic gyroscopes, etc.