Multiple channel wavelength division multiplexer/demultiplexer

Details Multiple channel wavelength division multiplexer/demultiplexer Multiple channel wavelength division multiplexer/demultiplexer

1987-02-24

1988-05-17

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 2, 455616, 350401, H04B 900, G02B 530

Patent

active

047455918

ABSTRACT:
A sequential configuration of log.sub.2 n stages of birefringent elements are set forth. Each stage has a transfer function approximating a square wave, and successive stages have half periods. An input beam with n wavelength components would be demultiplexed into 2, 4 and finally n output beams at the output of the first, second, and log.sub.2 n stages, each output beam containing only one wavelength. Successive stages consist of two polarizing beam splitters between which is located their appropriate length of birefringent element to achieve the desired transfer function.

REFERENCES:
patent: 4566761 (1986-01-01), Carlsen et al.
patent: 4685773 (1987-08-01), Carlsen et al.

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