I'm not sure but that looks like a 0.062 (pin diameter) connector, check:
http://www.greatplainselectronics.com/products.asp?cat=51
The connector is just the housing, you'll need the pins too.
Is the part you're showing from the harness or the optical board? Are there a bunch of cut wires, where will you connect it to?
BTW - I assume that's the connector to the optical board, an 'optical connector' is an entirely different beast.
Jerry