Presentation 2019-10-17
Efficient Optical Alignment Technique for Multi-Lane TOSAs with Integrated Multiplexing with Free Space Optics
Tadashi Murao, Keita Mochizuki, Kazutaka Ikeda, Mizuki Shirao, Kiyotomo Hasegawa, Hiroshi Aruga,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) An efficient and low-cost optical alignment technique is for the first time established for compact multi-lane transmitter optical sub-assemblies (TOSAs) with an integrated multiplexer based on free space optics (FSO). An FSO system for the 100 GbE TOSA is fabricated in a compact package to confirm the validity of the technique. It is demonstrated by experiment that the optimum optical alignment condition can successfully be figured out by this technique without any expensive equipment, which has been a significant issue for TOSAs with integrated FSO systems, confirming the validity of the technique. Further, Monte Carlo simulations show that the optical output power distribution across the lanes is compatible with the 100 GbE LR4 specification, indicating the suitability of the proposed low-cost alignment technique. It is also shown that the acceptable long-term power variation required for reliability is predicted owing to the relaxation of the positional tolerance of the collimator lenses, which is obtained by the proposed technique.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Free space optics (FSO) / hybrid integration / laser diode (LD) / 100 and 400 Gbps Ethernet (GbE) / planar lightwave circuit (PLC) / transmitter optical sub-assembly (TOSA)
Paper # OCS2019-27,OPE2019-65,LQE2019-43
Date of Issue 2019-10-10 (OCS, OPE, LQE)

Conference Information
Committee OCS / LQE / OPE
Conference Date 2019/10/17(2days)
Place (in Japanese) (See Japanese page)
Place (in English)
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Joji Maeda(Tokyo Univ. of Science) / Hiroshi Aruga(Mitsubishi Electric) / Hiroshi Takahashi(Sophia Univ.)
Vice Chair / Hiroshi Yasaka(Tohoku Univ.) / Goji Nakagawa(Fujitsu Labs.)
Secretary (NTT) / Hiroshi Yasaka(Furukawa Electric) / Goji Nakagawa(Furukawa Electric Industries)
Assistant / Fumito Nakajima(NTT) / Kenta Miura(Gunma Univ.) / Yuki Wakayama(Hitachi)

Paper Information
Registration To Technical Committee on Optical Communication Systems / Technical Committee on Lasers and Quantum Electronics / Technical Committee on OptoElectronics
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Efficient Optical Alignment Technique for Multi-Lane TOSAs with Integrated Multiplexing with Free Space Optics
Sub Title (in English)
Keyword(1) Free space optics (FSO)
Keyword(2) hybrid integration
Keyword(3) laser diode (LD)
Keyword(4) 100 and 400 Gbps Ethernet (GbE)
Keyword(5) planar lightwave circuit (PLC)
Keyword(6) transmitter optical sub-assembly (TOSA)
1st Author's Name Tadashi Murao
1st Author's Affiliation Mitsubishi Electric Corporation(Mitsubishi Electric)
2nd Author's Name Keita Mochizuki
2nd Author's Affiliation Mitsubishi Electric Corporation(Mitsubishi Electric)
3rd Author's Name Kazutaka Ikeda
3rd Author's Affiliation Mitsubishi Electric Corporation(Mitsubishi Electric)
4th Author's Name Mizuki Shirao
4th Author's Affiliation Mitsubishi Electric Corporation(Mitsubishi Electric)
5th Author's Name Kiyotomo Hasegawa
5th Author's Affiliation Mitsubishi Electric Corporation(Mitsubishi Electric)
6th Author's Name Hiroshi Aruga
6th Author's Affiliation Mitsubishi Electric Corporation(Mitsubishi Electric)
Date 2019-10-17
Paper # OCS2019-27,OPE2019-65,LQE2019-43
Volume (vol) vol.119
Number (no) OCS-229,OPE-230,LQE-231
Page pp.pp.1-6(OCS), pp.1-6(OPE), pp.1-6(LQE),
#Pages 6
Date of Issue 2019-10-10 (OCS, OPE, LQE)