5.23 A number of four-port single-mode fiber couplers are employed in the fabrication of a 32 x 32 port star coupler. Each four-port coupler has a split ratio of 50% and when an optical input power level of -6 dBm is launched into port 1, the output power level from port 3 is found to be 122 uW. Furthermore, there is a splice loss of 0.06 dB at the interconnection of each stage within the ladder design. Calculate the optical power emitted from each of the output ports when the -6 dBm power level is launched into any one of the input ports. Check the result.