Through the recent progress in information oriented society, the required information volume is expanding rapidly.
Under these circumstances, high-speed and high-capacity optical communication systems are deployed in the industry.
Especially high speed optical transceiver is the key device to realize high-speed system, and the practical development is
accelerated in the industry. In order to develop these leading edge products timely, the establishment of the global
standards is strongly demanded in the industry. Based on these backgrounds, Forum standardization bodies such as
OIF/IEEE802.3 are energetically creating the standards in the industry. With regard to 40G/100G standardization
activities, OIF leads telecom field and IEEE802.3 leads datacom field, and both activities become important recently.
The recent topics of these two standardization bodies are reviewed and its future direction is discussed. Two
organizations have completed the 1st gen 40G/100G standards, and soon after they starts creating the 2nd gen 40G/100G
standards for targeting more compact size and low power consumption transceivers, mainly because the unexpected huge
increase of the information volume. Key factor for the 2nd gen is the low power consumption technology such as new
CMOS technology and the design improvement of the heat dissipation. Also from the mechanical point of view, the
development of the new electrical interface such as 25G/50G and the brand-new hybrid integration technologies are
strongly expected in the industry. New configurations using silicon-photonics are reported by many organizations in the
recent standardization meetings.