Chao Liu, Di Wang, Lixiao Yao, Lei Li, Qionghua Wang. Optical attenuator based on phase modulation of a spatial light modulator[J]. Chinese Optics Letters, 2015, 13(8): 082301
- Chinese Optics Letters
- Vol. 13, Issue 8, 082301 (2015)
Fig. 1. Principle of the optical attenuator: (a) initial state; (b) loading a grayscale with phase π
Fig. 2. Phase modulation of the SLM when loading different grayscales.
Fig. 3. Results of loading different grayscales on the SLM: (a) value = 0 value = 15 value = 30 value = 45 value = 60 value = 75
Fig. 4. Attenuation when loading different grayscales on the SLM.
Fig. 5. Structure of the extended 1 × 2
Fig. 6. Grayscales loaded on the SLM and the results of light-on and light-off: (a) grayscale in (1, 1) state; (b) grayscale in (1, 0) state; (c) result of (1, 1) state; (d) result of (1, 0) state.
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Table 1. State of the 1×2 Optical Switch after Modulation of the SLM
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