Optical spectral analyzer

Details Optical spectral analyzer Optical spectral analyzer

1987-11-23

1989-07-25

Griffin, Robert L.

Multiplex communications

Wide area network

Packet switching

350 9618, 455600, 455612, H04B 900

Patent

active

048520799

ABSTRACT:
An optical spectral analyzer (10) for receiving an input beam (30) through a multi-mode optic fiber (28). The input or beam (30) has a predetermined spectral band width. The random individual spectral components of the beam (30) are dispersed by a grating (40) to generate a spectrum (42, 42' . . . 42.sup.N). A detector (52) senses the magnitude of the elements in a reflected focused spectrum (50, 50' . . . 50.sup.N) to recover the information placed on the optic fiber (28) at a remote location by a spectrum encoding device.

REFERENCES:
patent: 3845294 (1974-10-01), Indig et al.
patent: 3920983 (1975-11-01), Schlafer et al.
patent: 3953727 (1976-04-01), d'Auria et al.
patent: 4299488 (1981-11-01), Tomlinson
patent: 4626066 (1986-12-01), Levinson
patent: 4715027 (1987-12-01), Mahapatra
patent: 4723829 (1988-02-01), Koonen
patent: 4740951 (1988-04-01), Lizet et al.
Metcalf, "High Capacity Wavelength Multiplexer with a Large Diameter GRIN Rod Lens", Applied Optics, vol. 21, #5, 3-1-82, pp. 794-796.

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