“…Figure 6 shows the proposed optical layout for AIGO, including an input mode cleaner (IMC), a power recycling cavity (PRC), two arm cavities, a signal recycling cavity (SRC) and an output mode cleaner (OMC). The IMC has been thoroughly studied [17,18] and the current design includes a suspended IMC [19]; however, an optical fibre mode cleaner is being studied by research institutes in France and could be included in the AIGO design [20,21].…”