Wavelength division multiplexer

Details Wavelength division multiplexer Wavelength division multiplexer

2006-07-18

2006-07-18

Dong, Hung Xuan (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

C359S634000

Reexamination Certificate

active

07079322

ABSTRACT:
The wavelength division multiplexer includes a single optical substrate or a plurality of optical substrates integrated together, on which the first optical filter and the second optical filter are placed. The center wavelengths of three wavelength bands, λ1, λ2, and λ3, satisfy: 0.92≦λ2/λ1≦1.08, and 0.20≦λ3/λ1≦0.92 or 1.08≦λ3/λ1≦5.00. The first optical filter combines or separates light of λ3and two-wavelength multiplexed light of λ1and λ2. The second optical filter combines or separates light of λ1and light of λ2.

REFERENCES:
patent: 5583683 (1996-12-01), Scobey
patent: 2004/0109235 (2004-06-01), Zhong et al.

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