Printed circuit board for use in gigabit-capable passive optical network and method for laying out the printed circuit board

A method for laying out a printed circuit board for use in a gigabit-capable passive optical network, comprising the steps of:

• providing a printed circuit board having a first periphery and an opposing second periphery;
• laying out an analog circuit module at the first periphery of the printed circuit board so as for a plurality of analog signals to be transmitted between the printed circuit board and an external circuit;
• laying out an analog-to-digital conversion module on the printed circuit board in a manner that the analog-to-digital conversion module is disposed in vicinity of the analog circuit module for converting the analog signals into a plurality of digital signals and vice versa, respectively;
• laying out a signal processing module on the printed circuit board in a manner that the signal processing module is disposed in vicinity of the analog-to-digital conversion module so as to process the digital signals;
• laying out an optoelectronic transmitting and receiving module at the first periphery of the printed circuit board for performing optoelectronic modulation transfer on the digital signals and, upon completion of the optoelectronic modulation transfer, transmitting and receiving the digital signals in optical or electrical form;
• and
• laying out a power module at the second periphery of the printed circuit board for supplying power to the modules on the printed circuit board.