OOPS! The correct answer is "All of the above"

Scaling networks for capacity growth, efficiently transporting 10G services, driving down cost per bit of transport, and supporting long distance transport of 100GE services are all reasons that coherent technology is ubiquitously deployed in transport networks.

Oops! Good try but you missed this one. The correct answer is "Modulating the amplitude and phase of an optical signal along each of two polarizations"

Modulating the amplitude and phase of an optical signal along each of two polarizations is the approach Coherent Optics uses to impart more information into the same optical signal.

Oops! You got this one wrong. The correct answer is "Delivers optimal capacity throughput per application distance"

Coherent Optics delivers optimal capacity throughput per application distance, which translates into economic benefits.

OOPS! The correct answer is "16-QAM, BPSK and 8QAM"

16-QAM, BPSK, and 8QAM are all modulation formats that have been implemented in coherent optical solutions.

Oops! You got this one wrong. The correct answer is "8D-2QAM yields improved capacity/reach benefits for trans-Pacific applications"

8D-2QAM yields optimal performance in trans-Pacific applications, increasing reach by up to 20 percent and/or capacity by up to 40 percent versus BPSK.

Oops! You got this one wrong. The correct answer is "It depends on the baud or symbol rate"

16QAM results in 200Gb/s for a ~30-35G symbols/second solution but can also provide higher capacities for higher baud rate solutions.

OOPS! The correct answer is "Double capacity and max spectral efficiency and programmable modulation "

Ciena’s WaveLogic 3 Extreme provides double capacity and max spectral efficiency with industry leading 16QAM plus other programmable modulations such as QPSK, 8QAM, and more!

OOPS! The correct answer is "All of the above"

Ciena WaveLogic provides all of the following intelligent functions: real time monitoring of key network parameters: CD, PMD, pre-FEC BER, etc.; continuous optimization for best system performance; integrated test set and client/facility loopbacks for faster service turn-up and troubleshooting; and embedded algorithms for 50ms coherent receiver recovery times in optical path switching.

Oops! You got this one wrong. The correct answer is "At both the transmit and receive side"

Coherent Optical solutions require DSP at both the Transmit and Receive side. Rx DSP provides compensation for CD, PMD, and other impairments, and Tx DSP is required for a wide range of programmable modulations.

OOPS! The correct answer is "All of the above"

WaveLogic Ai helps provide unprecedented levels of automation, intelligence and scale essential to future, on-demand networks. Some key benefits that WaveLogic Ai delivers include: open automation and intelligence; extensive tunability; previously unattainable network efficiencies; and massive scalability.

WaveLogic Ai can calculate and give operators data through open interfaces that they can use to plan and build on-demand, programmable networks. It is the first coherent modem able to provide capacity tunability, from 100G to 400G in 50G increments, and uses a high-performance modulation to implement 400G on a single carrier. WaveLogic Ai gives operators new levels of visibility into their network and the ability to accurately engineer the network for optimal capacity to achieve maximum efficiency. And finally, it builds upon the best-in-class performance of WaveLogic 3 and uses a higher baud rate, advanced 400G-optimized technology engine to drive twice the capacity per channel, three times the distance at the equivalent capacity, and four times the service density, supporting innovative 400GE and flexible client services, all at less than half the power.