Optical bench for a semiconductor laser and method
AssigneeAMP Incorporated
InventorsEugene I. Gordon, Robert J. Nielsen, John W. Stafford
Life of this patent
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Abstract
An alignment fixture includes an optical bench 12 mounting a semiconductor laser 21, a monitor 23 of optical emission, a lens 27 focused for transmitting optical emission along an optical axis 43, a holder 26 mounting the lens 27, a pedestal 36 positioning a diaphragm 29 spaced for the lens 27, an optical fiber 45, a tube 49 surrounding the fiber 45 and joined to the fiber 45, a bushing 55 surrounding the tube 49 and joined to the optical bench 12, and a datum surface 16' on the bench 12 for aligning the lens 27 and the fiber 45 with the optical axis 43.
Claims4
A method for optically coupling an optical device with a semiconductor laser, comprising the steps of;
- activating a semiconductor laser to produce optical emission from a facet of emission of the laser,
- transmitting an image of the facet of emission along an optical axis extending from the facet of emission along a platform on which the laser is mounted,
- focusing an optical lens on the facet of emission,
- adjusting the lens in position to the platform until an image of the facet of emission is transmitted by the lens along the optical axis,
- mounting the lens on the platform,
- aligning an optical face of an optical fiber along the optical axis extending from the lens, and
- mounting the optical fiber on the platform with the optical face in alignment with the optical axis.
Dependencies are inferred from the claim text.