摘要:
The present document relates to an optical transmission system using multimode fibers. In particular, the present document relates to a method and system for coupling light into and out from multimode fibers. An optical coupling device (302, 304) configured to couple light between an array of light sources (211) or drains (221) and a multi-mode fiber (130) is described. The device comprises an array of first interfaces adapted to connect with the array of light sources (211) or drains (221), respectively; a second interface adapted to connect with the multi-mode fiber (130); an array of first lenses (401, 412), wherein a front side of each lens of the array of first lenses (401, 412) faces a corresponding first interface of the array of first interfaces; and a second lens (402, 412) at a backside of the array of first lenses (401,412) facing the second interface.
摘要:
The invention relates to an apparatus (100) for performing clock and/or data recovery for a data signal (dsi) of a first data rate, wherein said apparatus (100) comprises a controllable oscillator (110) for providing a clock signal (clk), and wherein said apparatus (100) further comprises a PLL, phased locked loop, unit (120) for controlling a phase and/or a frequency of said clock signal (clk) depending on said data signal (dsi), wherein both said controllable oscillator (110) and said PLL unit (120) are configured to operate at a frequency which corresponds to a second data rate, said second data rate being lower than said first data rate.