Wavelength-tunable devices and systems comprising flexed optical

Details Wavelength-tunable devices and systems comprising flexed optical Wavelength-tunable devices and systems comprising flexed optical

1998-09-28

2000-11-28

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Input/output coupler

385 16, 385 19, 372 20, 359130, 359341, G02B 634

Patent

active

061545902

ABSTRACT:
In accordance with the invention, a tunable optical grating device comprises a grating, which is fixed at both ends to a support frame and is flexed so that a tensile strain induced in the grating reconfigures the resonant wavelength. Typical embodiments include mechanical or magnetic latching arrangements capable of inducing a latchable change in grating periodicity. In typical embodiments programmable and latchable magnets accurately produce a predetermined amount of fiber deflection and tensile strain, thereby producing a latchable wavelength shift with minimal power. The device is especially useful in WDM communication systems for adding or dropping channels, for dynamically gain-equalizing optical amplifiers, for tuning lasers, and for dispersion compensation.

REFERENCES:
patent: 5999546 (1999-12-01), Espindola et al.
patent: 6055348 (2000-04-01), Jin et al.

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