A Two-Mode (De)Multiplexer Based on Multimode Interferometer Coupler and Y-Junction on InP Substrate
A two-mode (de)multiplexer [(DE)MUX] based on a multimode interferometer coupler and a symmetric Y-junction coupler is proposed and demonstrated on an InP substrate. By introducing a phase shifter section with a thickness-detuned core layer, a miniature two-mode (DE)MUX with mode conversion of 100&a...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2016-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7396938/ |
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| Summary: | A two-mode (de)multiplexer [(DE)MUX] based on a multimode interferometer coupler and a symmetric Y-junction coupler is proposed and demonstrated on an InP substrate. By introducing a phase shifter section with a thickness-detuned core layer, a miniature two-mode (DE)MUX with mode conversion of 100% is designed and demonstrated. Simulation shows that the total length of the device can be as small as 446 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m} $</tex-math></inline-formula>: much shorter than other mode (DE) MUX in InP materials. Within the entire C-band wavelength range, the calculated insertion loss of the device is less than 0.7 dB, and the crosstalk is below −24 dB. A mode (DE) MUX was fabricated in InP materials, and the mode conversion of the <inline-formula> <tex-math notation="LaTeX">$\text{TE}_{0}$</tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">$\text{TE}_{1}$</tex-math></inline-formula> modes were successfully demonstrated. |
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| ISSN: | 1943-0655 |