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The number of FTTH subscribers in Japan has overtaken that of xDSL finally, also in North America, Asia and Europe the rapid conversion of the access systems to fiber optics is progressing to meet the demand for high-speed, broadband access as the internet and other network systems continue to expand.
A passive optical network(PON) system is considered to be applicable to
medium- and small-sized businesses(FTTB) and general households(FTTH) as part of the fiber-optic portion of the access system. These optical transceivers are used in PON systems.

Products complying with ITU-T G.984.2 appplying the burst-mode receiving technolgy which has been accumulated with the progress of PON systems, are provided.
| GPON OLT | ITU-T G.984.2 | Receiver Type | Form Factor | |
|---|---|---|---|---|
| Down | Up | Class B+ | ||
| 2.5G | 1.25G | OD-B2523-L2xP | 2R | SFP |