Dual directional wavelength demultiplexer

Details Dual directional wavelength demultiplexer Dual directional wavelength demultiplexer

1980-06-16

1982-08-10

Lee, John D.

Multiplex communications

Wide area network

Packet switching

350 9616, 370 3, H04B 900

Patent

active

043435327

ABSTRACT:
A dual directional, wavelength demultiplexer including an optical fiber mounted and adhered to a curved surface having a clad single-fiber core, a planar surface extending partially into and along the fiber through the cladding, a prism mounted on the surface having two reflective surfaces positioned to receive multiple signals from the fiber travelling in opposite directions, optical gratings positioned at the reflective surfaces effective to diffract and demultiplex the signals, and photodiode arrays mounted adjacent the prism to receive the demultiplexed reflected signals.

REFERENCES:
patent: 4061577 (1977-12-01), Bell
patent: 4089584 (1978-05-01), Polczynski
patent: 4136929 (1979-01-01), Suzaki
patent: 4301543 (1981-11-01), Palmer
patent: 4307933 (1981-12-01), Palmer et al.
patent: 4317614 (1982-03-01), Palmer
Hsu et al., "Single Mode Optical Fiber Pickoff Coupler", Applied Optics, vol. 15, No. 10, Oct. 1976, pp. 2310-2312.
Stewart et al., "Directional Couplers for Optical Fibre Commun. Systems", Proc. of 3rd Eur. Conf. on Opt. Commun., Sep. 1977, pp. 170-172.
Weidel et al., "Tee-Coupler for Single-Mode Fibres", Electronics Lett., vol. 15, No. 23, Nov. 1979, pp. 737-738.

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