Includes of two documents: (1) ST 297-1:2015 which defines an optical fiber system for transmitting bit-serial digital signals intended for transmitting SMPTE ST 259 signals (143 through 360 Mb/s), SMPTE ST 344 signals (540Mb/s), SMPTE ST 292-1/2 signals (1.485 Gb/s and 1. 485/1.001 Gb/s), SMPTE ST 424 signals (2.970 Gb/s and 2.970/1.001 Gb/s), SMPTE ST 2081-1 signals (5.940 Gb/s and 5.940/1.001 Gb/s) and SMPTE ST 2082-1 signals (11.88 Gb/s and 11.88/1.001 Gb/s); and (2) ST 297-2:2017 which defines the transport of Multi-Link (ML) or Multi-Channel (MC) SDI data streams over a single fiber using Coarse Wavelength Division Multiplexing (CWDM).