Abstract
We propose and experimentally demonstrate a low-loss and low-crosstalk Mach-Zehnder mode/wavelength multi/demultiplexer for WDM/MDM transmission based on a Si-photonics platform. A broadband 3-dB mode divider, which is also newly devised here, makes it possible to compose a Mach-Zehnder filter for "mode" and "wavelength" simultaneously. Transmission characteristics of fabricated 3-dB mode dividers are in excellent agreement with theoretical results. Mach-Zehnder filters using the 3-dB mode divider with a free spectral range (FSR) of 20 and 1 nm are also fabricated and the modal crosstalk is less than -24 dB in the 40-nm wavelength range for the MZ filter with an FSR of 20 nm. The tuning of the peak wavelength position by the TiN heater is also demonstrated.
Highlights
For the purpose of expanding communication capacity of optical communication system, wavelength division multiplexing (WDM) has been studied
We propose and experimentally demonstrate a low-loss and low-crosstalk MachZehnder mode/wavelength multi/demultiplexer for WDM/mode division multiplexing (MDM) transmission based on a Siphotonics platform
Mach-Zehnder filters using the 3-dB mode divider with a free spectral range (FSR) of 20 and 1 nm are fabricated and the modal crosstalk is less than −24 dB in the 40-nm wavelength range for the MZ filter with an FSR of
Summary
Instructions for use Hokkaido University Collection of Scholarly and Academic Papers : HUSCAP. Si-based Mach-Zehnder wavelength/mode multi/demultiplexer for a WDM/MDM transmission system. Graduate School of Information Science and Technology, Hokkaido University, North 14 West 9, Kitaku, Sapporo, 060-0814, Japan. NTT Access Network Service Systems Laboratories, NTT Corporation, 1-7-1 Hanabatake, Tsukuba-shi, Ibaraki, 305-0805, Japan
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