Low-power and high-speed 2 × 2 thermo-optic MMI-MZI switch with suspended phase arms and heater-on-slab structure.
Opt Lett
; 46(2): 234-237, 2021 Jan 15.
Article
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| MEDLINE
| ID: mdl-33448995
ABSTRACT
We propose a ${2} \times {2}$ thermo-optic switch with high switching performance. The switch is based on multimode interferometer (MMI) couplers and a Mach-Zehnder interferometer (MZI) structure, where the phase arms are designed as laterally supported suspended ridge waveguides (LSSRWs) with a metallic heater placed on the slab. It is experimentally demonstrated that this switch has a power consumption of 1.07 mW, a thermal time constant ${\sim}{4.7}\;\unicode{x00B5} {\rm s}$, an extinction ratio ${\sim}{30}\;{\rm dB}$, and an insertion loss ${\sim}{0.5}\;{\rm dB}$. Particularly, the corresponding figure of merit (FOM) has been improved by 1 order magnitude compared with general thermo-optic switches. This ${2} \times {2}$ thermo-optic MMI-MZI switch may find potential application for network reconfiguration and on-chip optical information processing.
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01-internacional
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MEDLINE
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En
Revista:
Opt Lett
Año:
2021
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Article