Abstract
Photonic crystal slab waveguides (PCSWs), based on the novel magnetooptic material, yttrium iron garnet (YIG), have been designed in order to enable fully integrated/optical isolators. The PCSWs possess fundamental bandgaps for even (transverse-electric (TE)-like) modes around the wavelength of 1.33 μm. Propagation losses for both the TE-like and transverse-magnetic (TM)-like polarizations with various orientations have been investigated numerically using partial-wave analysis and a three-dimensional finite-difference time-domain method. The resulting PCSW designs can be used to isolate TE-like modes from TM-like modes and vice versa with isolation ratios of - 60 and - 40 dB, respectively. One of the main benefits of these designs is that they provide interface-free polarizers for the garnet waveguides. The designs can easily be extended to 1.55 μm for further versatility.
Original language | English (US) |
---|---|
Pages (from-to) | 127-129 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 17 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1 2005 |
Keywords
- Integrated optical isolator
- Magnetooptic material
- Photonic bandgap
- Photonic crystal (PC)