| 摘要 |
A nonlinear interferometer wavelength separation mechanism (400) for use in a dense wavelength division multiplexer is provided. The mechanism includes a first glass plate (480A) optically coupled to a second glass plate (480B), forming a space therebetween; a mechanism (430) for introducing a phase shift in at least one channel of an optical signal; and a mechanism (400) (420) for broadening a pass band of the optical signal. The nonlinear interferometer (400) of the present invention allows a dense wavelength division multiplexer to have an ease in alignment and a higher tolerance to drifts due to the increase in the width of the pass band. It also has the added ability of being passively stable to temperature.
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