We investigated femtosecond laser inscription of IG2 waveguides and photonic structures for mid-infrared applications. 1 x 4 beamsplitters are realized, achieving normalized splitting ratios of more than 90% among the four arms. In addition, both fundamental mode and multimode guiding in the mid-IR regime at 4.55 µm are demonstrated. The Mid-IR waveguiding properties at 4.55 µm will be presented for both single-mode and multimode waveguides with as low as 0.8 dB/cm propagation loss for the single-mode guiding and controllable mode field diameter.
This work is supported by the US National Aeronautics and Space Administration under STTR Contracts 80NSSC20C0027, 80NSSC21C0638, and 80NSSC22PA936.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.