Abstract

For the first time to our knowledge, ultrafast laser writing has generated room-temperature stable guided-wave optics in bulk lithium niobate for the telecommunication spectrum. Among a seven-dimensional parameter space for waveguide optimization, two frequently overlooked parameters, pulse duration and polarization, were found to be key in overcoming undesired nonlinear optical responses imposed by this material. Single-mode waveguides were best formed with circularly polarized light having a relatively long pulse duration of 1.0ps. The waveguides were highly polarization dependent and guided in both telecommunication bands near 1300 and 1550nm, exhibiting losses as low as 0.7dBcm.

© 2006 Optical Society of America

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