Profile: VCHUNG Technology Co.Ltd specializes in providing optical fiber communication devices. We offer optical transceivers and MPO/MTP optical fiber cabling interconnected products. Variable optical attenuators provide a necessary feature of variability to the field of attenuators. These particular devices allow for online adjusting of the main attenuator's functions. These reduce the strength of an alternating-current signal. They do so continuously or in steps. Either way, they achieve the same results without causing appreciable signal distortion.