Single frequency laser source for optical data storage system
AssigneeSeagate Technology LLC
InventorsJohn F. Heanue, Jerry E. Hurst, Jr., Jeffrey P. Wilde
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Abstract
An optical data storage system utilizes optical fibers for transfer of information to and from storage media. The storage media includes magneto-optical storage disks. The optical fibers are single-mode polarization maintaining optical fibers. A single frequency laser diode provides a source of polarized light. Accordingly, a polarization state conveyed by the polarization maintaining optical fiber is accurately reproduced with reduced noise, as compared to use of a Fabry-Perot laser diode.
Claims14
An optical data storage system, including:
- a single frequency diode laser operating at one stable frequency;
- and
- at least one polarization maintaining optical fiber;
- said at least one polarization maintaining optical fiber used to direct light from said single frequency diode laser to a storage media.
An assembly for use in a magneto-optical data storage system, comprising:
- a single frequency diode laser source operating at one stable frequency;
- and
- a polarization maintaining optical fiber coupled to the single frequency diode laser wherein the polarization maintaining optical fiber directs light from the single frequency diode laser to a storage media.
A method of using light in an optical data storage system comprising the steps of:
- providing light from a single frequency diode laser source at one stable frequency;
- and
- directing said light between said single frequency diode laser source and a storage destination using a polarization maintaining optical fiber.
Dependencies are inferred from the claim text.