Patent ID: 8103140

Claim:
A substrate optical system comprising: a substrate comprising: one or more recesses configured to receive one or more isolators in optical alignment; one or more pedestals positioned within one or more troughs on the substrate, the one or more pedestals configured to receive at least one of one or more photodiodes and one or more pump sources in optical alignment, wherein the one or more pedestals are distinct elements from the substrate; one or more V-grooves configured to receive one or more optical fibers in optical alignment; one or more pyramidal trenches configured to receive one or more ball lenses in optical alignment; one or more slots configured to receive one or more polarizing isolators in optical alignment; one or more vias configured to receive one or more wavelength division multiplexers in optical alignment, all aligned for use in an interferometric fiber optic gyroscope (IFOG); and wherein the placement and dimensioning of the recesses, the pedestals, the V-grooves, the pyramidal trenches, the slots, and the vias facilitates passive alignment of the isolators, the at least one of the photodiodes and pump sources, the optical fibers, the ball lenses, the polarizing isolators, and the wavelength division multiplexers.