Polarization-independent and tunable comb filter based on a free-space coupling technique.
A novel polarization-independent and tunable comb filter that consists of only one glass slab sandwiched between two gold films has been demonstrated. The filter has greater than 12 dB channel isolation, less than 0.2 dB insertion loss, and accurate 0.8 nm channel spacing.
Lu
Haifeng
H
Department of Physics, Shanghai Jiao Tong University, China. sealu@sjtu.edu.cn
Cao
Zhuangqi
Z
Li
Honggen
H
Shen
Qishen
Q
Deng
Xiaoxu
X