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Mr. Erus Rustami of Photonic Device Science Laboratory was awarded an IEEE (The Institute of Electrical and Electronics Engineers) Kansai Section Student Paper Award 2021.

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Mr. Erus Rustami of Photonic Device Science Laboratory (PDSL) was awarded an IEEE Kansai Section Student Paper Award. This award, which has started in 2004, recognizes student members belonging to the IEEE Kansai branch who have published excellent English papers in a wide range of fields covered by IEEE from October 2018 to September 2020. Nine students receive the student paper award from all applications, which is officially awarded in a 2021 IEEE Kansai Branch General Meeting on February 18, 2021 (online). He received a doctoral degree and now works at PDSL as a postdoctoral fellow.

Needle-Type Image Sensor with Band-Pass Composite Emission Filter and Parallel Fiber-Coupled Laser Excitation

Erus Rustami, Kiyotaka Sasagawa, Kenji Sugie, Yasumi Ohta, Makito Haruta, Toshihiko Noda, Takashi Tokuda, Jun Ohta

I would like to express my gratitude and appreciation to my supervisors, Prof. Jun Ohta and Prof. Kiyotaka Sasagawa, for their wonderful mentorship throughout my doctoral studies. I would also like to extend my thanks to all Professors in Photonic Device Science Laboratory and Ms. Fukuzawa for their constant care and support. This award is an excellent morale-booster that will encourage me to continue doing my best at work.

This work presents an implantable fluorescence system with a composite emission filter and fiber-coupled laser excitation. The composite structure of the short-pass interference filter and absorption filters exhibited a band-pass spectrum between 510 and 570 nm, close to green fluorescent protein (GFP) emission. High-quality excitation light was achieved by utilizing a blue laser through a low-numerical-aperture optical fiber. This coupling method helps deliver a narrow spectrum and controllable irradiation light in a specific area to minimize auto-fluorescence from the tissue. The fabricated lensless system performance is experimentally validated by imaging emission. The proposed device is capable of perceiving fluorescence emission from microspheres and GFP noticeably.

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