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Wavelength-Selective Switch Based on a Polarization-Independent Transmission Grating and a High Fill-Factor Micromirror Array

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5 Author(s)
Sihua Li ; State Key Lab. of Transducer Technol., Chinese Acad. of Sci., Shanghai, China ; Zhujun Wan ; Jing Xu ; Shaolong Zhong
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This letter presents a wavelength-selective switch (WSS) based on a polarization-independent transmission grating and a high fill-factor micromirror array. The WSS does not require additional polarization management devices and successfully achieves a low polarization-dependent loss (PDL). A 1 × 4 port WSS has been successfully demonstrated. The maximum driving voltage is about 155 V and an applied overvoltage also illustrates the good reliability of WSS. The test results show that the PDL is less than 0.4 dB. The measured fiber-to-fiber insertion loss (IL) is in range from about 6 to 7 dB and the switching time is about 530 μs .

Published in:

Photonics Technology Letters, IEEE  (Volume:23 ,  Issue: 17 )