Axsys Technologies Inc. has received an order for a next-generation fiber-optics automated alignment and attach system from a manufacturer of laser diodes.   . . .   Ronald L. Zarrella has been elected chairman and CEO of Bausch & Lomb.   . . .   iolon Inc., a designer and manufacturer of tunable optical devices, has appointed Allan Ashmead as vice president of business development and Michael Hamilton-Smith as director of international business development. Hamilton-Smith will be based at iolon's new Exeter office in the UK.