Abstract
We propose and experimentally demonstrate a compact and electro-optic (EO) tunable interleaver in -cut lithium niobate thin film using an asymmetrical Mach–Zehnder interferometer configuration. Our typical fabricated device has an EO interactive length of and a total length of . Over a wide wavelength range from 1528 to 1605 nm, the device exhibits polarization-insensitive center wavelengths and channel spacing of , but a slightly different extinction ratio of 10–20 and 12–23 dB, and electrical wavelength tuning sensitivity of and for the transverse electric- and transverse magnetic-polarized input light, respectively. The proposed interleaver also has the potential to be used as a tunable filter or a wavelength-selective switch.
© 2018 Optical Society of America
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