Optical systems and devices using long period spectral shaping d

Details Optical systems and devices using long period spectral shaping d Optical systems and devices using long period spectral shaping d

1994-03-31

1995-07-04

Lee, John D.

Optical waveguides

With optical coupler

Input/output coupler

385 28, 385123, G02B 634

Patent

active

054308178

ABSTRACT:
In accordance with the present invention, optical fiber communications systems are provided with one or more long period spectral shaping devices to shift light of unwanted wavelength from guided modes into non-guided modes. Such devices can be used for removing unused laser pump energy, for removing amplified spontaneous emission, and for flattening the spectral response of an erbium amplifier. Such devices can also provide optical fiber sensing systems with inexpensive shift detectors.

REFERENCES:
patent: 4912523 (1990-03-01), Refi et al.
patent: 4915468 (1990-04-01), Kim et al.
patent: 5007705 (1991-04-01), Morey et al.
patent: 5048909 (1991-09-01), Henry et al.
patent: 5067789 (1991-11-01), Hall et al.
patent: 5131069 (1992-07-01), Hall et al.
patent: 5216739 (1993-06-01), Hill et al.

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