Abstract
The microwave phase shifter using 25-GHz dense wavelength division multiplexing (DWDM) channel spacing tuning on the silicon-on-insulator microring resonator (MRR), which was utilizing the multimode interference as the coupling function to achieve wavelength independence, is proposed and demonstrated. With a quality factor of 1199 for the MRR, there was 25-deg phase tuning for every 25-GHz DWDM channel spacing at 5-GHz microwave frequency. The total tunability from the microwave phase shifter could achieve 350 deg using 22 DWDM channels with 25-GHz spacing.
Highlights
The photonic generation, processing, distribution, filtering, and control of microwave and millimeter wave signals are of interests for a number of applications due to the advantages of large bandwidth, fast tunability, immunity to electromagnetic interference, and low weight of photonic components
A photonic microwave phase shifter utilizing a silicon-on-insulator (SOI) microring resonator (MRR) by the directional coupler, which was experimentally showing a 0-deg to 336-deg phase shifting range by the thermo-optical tuning, is proposed.[5]
Under the over-coupling condition of the broad-phase tuning range, the multimode interferometer (MMI) for the transverse magnetic (TM) polarization was designed to have the length of 9.6 μm, width of 3 μm, and input/output waveguide distance as 1 μm when the silicon-wire waveguide owned the width of 0.45 μm and height of 0.26 μm
Summary
The photonic generation, processing, distribution, filtering, and control of microwave and millimeter wave signals are of interests for a number of applications due to the advantages of large bandwidth, fast tunability, immunity to electromagnetic interference, and low weight of photonic components. An important component in many microwave photonics applications is a phase shifter that provides large bandwidth and fast response time. Various techniques for realizing photonic phase shifters have been demonstrated such as wavelength conversion,[1] stimulated Brillouin scattering,[2] slow light effect in semiconductor devices,[3] and crossphase modulation.[4] Recently, a photonic microwave phase shifter utilizing a silicon-on-insulator (SOI) microring resonator (MRR) by the directional coupler, which was experimentally showing a 0-deg to 336-deg phase shifting range by the thermo-optical tuning, is proposed.[5]. To meet the highest phase tuning range, the SOI MRR was designed for a low quality factor under the over-coupling condition.[5]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
