Optical attenuator based on phase modulation of a spatial light modulator

Chao Liu; Di Wang; Lixiao Yao; Lei Li; Qionghua Wang

doi:doi:10.3788/COL201513.082301

Chinese Optics Letters, 2015, 13 (8): 082301, Published Online: Sep. 14, 2018

Optical attenuator based on phase modulation of a spatial light modulator Download： 698次

Chao Liu Di Wang Lixiao Yao Lei Li Qionghua Wang ^*

Author Affiliations

School of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China

Figures & Tables

Fig. 1. Principle of the optical attenuator: (a) initial state; (b) loading a grayscale with phase π on the SLM.

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Fig. 2. Phase modulation of the SLM when loading different grayscales.

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Fig. 3. Results of loading different grayscales on the SLM: (a) value=0; (b) value=15; (c) value=30; (d) value=45; (e) value=60; (f) value=75 (Media 1).

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Fig. 4. Attenuation when loading different grayscales on the SLM.

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Fig. 5. Structure of the extended 1×2 optical switch.

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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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Table1. State of the 1×2 Optical Switch after Modulation of the SLM

Input	T	B	Polarization	Output
Light source	1	1			1
	0	0			2
	1	0	p	1		2
	0	1	s	1		2

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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.

Optical attenuator based on phase modulation of a spatial light modulator Download： 698次

Fig. 1. Principle of the optical attenuator: (a) initial state; (b) loading a grayscale with phase π on the SLM.

Fig. 2. Phase modulation of the SLM when loading different grayscales.

Fig. 3. Results of loading different grayscales on the SLM: (a) value=0; (b) value=15; (c) value=30; (d) value=45; (e) value=60; (f) value=75 (Media 1).

Fig. 4. Attenuation when loading different grayscales on the SLM.

Fig. 5. Structure of the extended 1×2 optical switch.

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.

Table1. State of the 1×2 Optical Switch after Modulation of the SLM

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Optical attenuator based on phase modulation of a spatial light modulator Download： 698次

Fig. 1. Principle of the optical attenuator: (a) initial state; (b) loading a grayscale with phase π on the SLM.

Fig. 2. Phase modulation of the SLM when loading different grayscales.

Fig. 3. Results of loading different grayscales on the SLM: (a) value=0; (b) value=15; (c) value=30; (d) value=45; (e) value=60; (f) value=75 (Media 1).

Fig. 4. Attenuation when loading different grayscales on the SLM.

Fig. 5. Structure of the extended 1×2 optical switch.

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.

Table1. State of the 1×2 Optical Switch after Modulation of the SLM

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