Search

Your search keyword '"Koichiro Adachi"' showing total 5 results
Start Over Author "Koichiro Adachi" Journal optical fiber communication conference
5 results on '"Koichiro Adachi"'

1. A Passive Optical Alignment Technique for Single-mode Fibers and Light-source Arrays

Author

Koichiro Adachi, M. Shishikura, T. Aoki, H. Irie, S. Tanaka, Kazuhiko Naoe, Y. Sasaki, Akira Nakanishi, and Takanori Suzuki

Subjects
Distributed feedback laser, Optical alignment, Materials science, business.industry, Optical testing, 020208 electrical & electronic engineering, Single-mode optical fiber, Physics::Optics, 02 engineering and technology, Laser array, Fiber array, 020210 optoelectronics & photonics, Optics, Light source, 0202 electrical engineering, electronic engineering, information engineering, Coupling efficiency, Optoelectronics, business
Abstract

A passive optical alignment based on a lens-integrated surface-emitting laser array and a single-mode fiber array was demonstrated. The proposed alignment technique enables better coupling efficiency than that of conventional DFB laser with active alignment.

Published
2017
Full Text
View/download PDF

2. Capability of High Optical-Feedback Tolerance and Non-Hermetic-Packaging for Low-Cost Interconnections Using Lens-Integrated Surface-Emitting Laser

Author

Shigehisa Tanaka, Yuki Wakayama, Kazuhiko Naoe, Kouji Nakahara, Akira Nakanishi, Aki Takei, Koichiro Adachi, Kazuhisa Uomi, and Takanori Suzuki

Subjects
Optical amplifier, Imagination, Distributed feedback laser, Materials science, business.industry, media_common.quotation_subject, Laser, law.invention, Lens (optics), Optics, law, Reflection (physics), Optoelectronics, Semiconductor optical gain, business, Tunable laser, media_common
Abstract

Low-cost optical assemblies for optical interconnections using lens-integrated surface-emitting laser are proposed. High coupling efficiency with single-mode-fibers of over −1.9dB and RIN below −140dB/Hz with large back reflection and 85°C/85% storage test are demonstrated.

Published
2015
Full Text
View/download PDF

3. A 50-Gb/s NRZ-modulated Optical Transmitter based on a DFB-LD and a 0.18-μm SiGe BiCMOS LD Driver

Author

Tatemi Ido, Hiroki Yamashita, Takashi Takemoto, Etsuko Nomoto, Takahiro Nakamura, Koichiro Adachi, Yoshikazu Sugiyama, Kenichi Osada, Hideo Arimoto, Yasunobu Matsuoka, Kouji Nakahara, and Hidenori Yonezawa

Subjects
chemistry.chemical_compound, Materials science, Optical transmitter, chemistry, business.industry, Bandwidth (signal processing), Electrical engineering, Optoelectronics, Bicmos integrated circuits, BiCMOS, business, Silicon-germanium
Abstract

A 50-Gb/s optical transmitter, consisting of a DFB-LD with a bandwidth of 20 GHz and a SiGe BiCMOS LD driver, was developed. At 43-50 Gb/s, it enhanced a LD bandwidth and demonstrated wide eye openings.

Published
2015
Full Text
View/download PDF

4. Wide-temperature-range 103.2 (25.8 × 4)-Gb/s Optical link for Data-center Interconnects using a 1.3-μm Lens-integrated Surface-emitting Laser array

Author

Takanori Suzuki, Takashi Takemoto, Yasunobu Matsuoka, Shigehisa Tanaka, Koichiro Adachi, Kazuhiko Naoe, and Akira Nakanishi

Subjects
Optical amplifier, Distributed feedback laser, Materials science, Silicon photonics, Optics, Phased-array optics, business.industry, Optical link, Optoelectronics, Optical modulation amplitude, Optical performance monitoring, business, Waveguide (optics)
Abstract

A 103.2 (25.8 × 4)-Gb/s optical link using a 1.3-µm lens-integrated surface-emitting laser array was demonstrated. A power penalty after 2-km transmission was small (

Published
2015
Full Text
View/download PDF

5. A Compact, High-optical-coupling-efficiency Transceiver with Lens-integrated Optical Devices and High-capacity 25-Gbps/ch × 12-ch Flexible Waveguides

Author

Hiroki Yamashita, Koichiro Adachi, Kenji Kogo, Shinji Tsuji, Y. Lee, Saori Hamamura, T. Saeki, Yasunobu Matsuoka, Daichi Kawamura, Toshiki Sugawara, Takeshi Takemoto, Toshiaki Takai, and Norio Chujo

Subjects
Optical amplifier, Silicon photonics, Materials science, Optics, business.industry, Optical cross-connect, Optical transistor, Optoelectronics, Optical performance monitoring, business, Microphotonics, Optical switch, Waveguide (optics)
Abstract

A compact optical low-power (9 mW/Gbps) transceiver with lens integrated devices and 12-ch flexible waveguides for optical interconnects was developed. It provides high optical-coupling efficiency and large tolerances (>-2.5 dB and >+/-15 μm) and demonstrated 25-Gbps/ch error-free transmission.

Published
2012
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results