There were more than 539 million fixed broadband subscribers globally at the end of second quarter, an 8% increase from the same quarter in 2010, according to ABI Research. The increase is driven in part by emerging markets. At present, North America is the region with the highest fiber optic broadband penetration followed by Asia-Pacific. Extending fiber broadband coverage not only increases speed but also allows the roll out of services including video on demand (VOD) and IPTV. ABI Research estimates that worldwide fiber broadband subscriber...