A HOLOGRAPHIC MULTIPLEXER/DEMULTIPLEXER AND WAVELENGTH EXCHANGER
- 申请公布号:
- WO2002029453(A1)
- 申请号:
- US2001027290
- 申请日期:
- 2001.08.31
- 申请公布日期:
- 2002.04.11
- 摘要:
- <p>A holographic multiplexer/demultiplexer (20) for separating and combining pre-selected wavelengths. Included is a holographic element that contains a specifically written recording of multiple separate focal points (30,32), one for each of a plurality of different pre-selected wavelengths. The holographic multiplexer/demultiplexer separates the different wavelengths contained within a single beam of radiation (12), and focuses each wavelength to a separate pre-recorded focal point. The holographic multiplexer/demultiplexer also multiplexes multiple beams containing a single wavelength of radiation, into a single beam and focuses the single beam to a pre-recorded focal point. The holographic multiplexer/demultiplexer can also be used as a wavelength exchanger.</p>
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