Beijing Rofea Optoelectronics Co., Ltd. offers a product line of commercial Phase modulators, Intensity modulator, Photodetector, Laser light sources, DFB lasers, Optical amplifiers, EDFA, SLD laser, QPSK modulation, Pulse laser, Light detector, Balanced photodetector, APD photodetector, Laser driver, Fiber optic amplifier, Optical power meter, Broadband laser, Tunable laser, Optical detector, Laser diode driver, Fiber amplifier, Semiconductor Laser, RF Over Fiber Link, ASE laser. We also provide many particular modulators for customization, such as 1*4 array phase modulators, ultra-low Vpi, and ultra-high extinction ratio modulators, primarily used in universities and institutes. Hope our products will be helpful to you and your research. www.bjrofoc.com bjrofoc@rof-oc.com Tel/Whatsapp：+86-18978968297