Reconfigurable and tunable compact comb filter and (de)interleaver on silicon platform

Optics Express
Nan ZhouJian Wang

Abstract

We propose and demonstrate a reconfigurable and tunable chip-scale comb filter and (de)interleaver on a silicon platform. The silicon-based photonic integrated device is formed by Sagnac loop mirrors (SLMs) with directional couplers replaced by multi-mode interference (MMI) assisted tunable Mach-Zehnder interferometer (MZI) couplers. The device can be regarded as a large SLM incorporating two small SLMs which form a Fabry-Perot (FP) cavity. By appropriately adjusting the micro-heaters in tunable MZI couplers and cavity, switchable operation between comb filter and (de)interleaver and extinction ratio and wavelength tunable operations of comb filter and (de)interleaver are achievable by thermo-optic tuning. Reconfigurable comb filter and (de)interleaver is demonstrated in the experiment. The central wavelength shifts of comb filter and (de)interleaver are demonstrated with wavelength tuning efficiencies of ~0.0224 nm/mW and ~0.0193 nm/mW, respectively. The 3-dB bandwidth of the comb filter is ~0.032 nm. The 3-dB and 20-dB bandwidths of the (de)interleaver passband are ~0.225 nm and ~0.326 nm. The obtained results indicate that the designed and fabricated device provides switchable comb filtering and interleaving functions togeth...Continue Reading

References

Mar 30, 2007·Optics Letters·Marcel W PruessnerWilliam S Rabinovich
Jun 12, 2008·Optics Express·Junfeng SongD L Kwong
Jan 22, 2007·Optics Express·Ansheng LiuMario Paniccia
Jun 11, 2007·Optics Express·Marcel W PruessnerWilliam S Rabinovich
Jul 23, 2007·Optics Express·Po DongMichal Lipson
Mar 5, 2013·Optics Letters·Xiaomeng SunJianping Chen
Dec 25, 2015·Nature·Chen SunVladimir M Stojanović
Jul 15, 2017·Optics Letters·Shuang ZhengJian Wang

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