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Entries in fractional quadrature amplitude modulation (1)


Acacia heralds the era of terabit-plus optical channels 

Acacia Communications has unveiled the AC1200-SC2 that delivers 1.2 terabits over a single optical channel. 

The SC2 (single carrier, single chip) is an upgrade of Acacia’s high-end AC1200 module. The AC1200 too is a 1.2-terabit module but uses two optical channels, each transmitting a 600-gigabit wavelength. The SC2 sends 1.2 terabits using two sub-carriers that fit within a single 150GHz-wide channel.

Each line is a data rate. Shown is the scope of how the baud rate and the modulation scheme can be varied and its impact on channel width, reach and data rate. Source: ADVA.

“In the SC2, we take care of everything so the user configures a single channel that is easier to manage in their network,” says Tom Williams, vice president of marketing at Acacia.

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