9.6 CONCLUSION
This chapter gave an overview of many PLC devices that have been demonstrated.
We regret that there are many more demonstrated PLC devices that we did not
have room to include. We concentrated mostly on silic a-based PLCs, but did
present some SiON, polymer, and InP PLCs. Si PLCs are currently being vigor-
ously investigated and hold the promise of integration with low-cost electronics.
Also, InP PLC research is experiencing a resurgence, because of increasing total
data rates. A 10-channel 10-Gb/s InP PLC transmitter and InP PLC receiver are
now being widely sold commercially [104], and InP PLCs that can produce
multilevel formats are currently of great interest.
We focused exclusively on PLCs for fiber-optic communications; and telecom- ...