| Presentation | 2018-12-07 [Invited Talk] Widely Tunable Lasers based on DFB array at FURUKAWA Akihiko Kasukawa, Tatsuro Kurobe, Toshikazu Mukaihara, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Widely tunable lasers (T-LD) had been developed for WDM CW light source during IT bubble since the system makers had to prepare all the channels as inventory such as 96 channels, which was a headache. System makers preferred DFB lasers since they had been qualified for telecommunication as signal sources both terrestrial and undersea usage, and ensured wavelength stability and reliability. We selected DFB lasers for T-LDs at Furukawa. Based on DFB lasers, we have developed T-LDs with high output power. To respond an emerging digital coherent communication systems, we have optimized T-LDs so that these LDs can achieve the narrow spectral linewidth. Our ?-ITLA (micro Integrable Tunable Laser Assembly, which includes driving control circuits compliant with OIF standard size, can achieve less than 300kHz of spectral linewidth with an coupled power of 16dBm. Since this kind of T-LDs have contained at least 12 DFB lasers monolithically integrated with MMI, SOA, we have succeeded in achieving high yield for mass production after lots of efforts for manufacturing these products. A narrow spectrum linewidth less than 100 kHz with an coupled power of 19dBm was achieved by introducing DR laser and AWG. Packaging technology is also important in terms of performance, reliability, mass production, since it contains some optical devices such as optical isolators, wavelength lockers inside. We also developed the way to fix these elements using UV based resin, which enable us to realize small size and low cost. In this talk, we will present these activity, including history of laser development at FURUKAWA |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Widely tunable lasers / digital coherent communication systems / micro-ITLA |
| Paper # | OPE2018-131,LQE2018-141,SIPH2018-47 |
| Date of Issue | 2018-11-29 (OPE, LQE) |
| Conference Information | |
| Committee | LQE / OPE |
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| Conference Date | 2018/12/6(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Keio University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Photonic Device Workshop |
| Chair | Kiichi Hamamoto(Kyusyu Univ.) / Kouki Sato(Furukawa Electric Industries) |
| Vice Chair | Hiroshi Aruga(Mitsubishi Electric) / Hiroshi Takahashi(Sophia Univ.) |
| Secretary | Hiroshi Aruga(SEI) / Hiroshi Takahashi(Furukawa Electric Industries) |
| Assistant | Masaya Nagai(Osaka Univ.) / Yuya Shoji(Tokyo Inst. of Tech.) / Kazunori Seno(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Lasers and Quantum Electronics / Technical Committee on OptoElectronics |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Invited Talk] Widely Tunable Lasers based on DFB array at FURUKAWA |
| Sub Title (in English) | |
| Keyword(1) | Widely tunable lasers |
| Keyword(2) | digital coherent communication systems |
| Keyword(3) | micro-ITLA |
| 1st Author's Name | Akihiko Kasukawa |
| 1st Author's Affiliation | Furukawa Electric Co., Ltd.(Furukawa Electric) |
| 2nd Author's Name | Tatsuro Kurobe |
| 2nd Author's Affiliation | Furukawa Electric Co., Ltd.(Furukawa Electric) |
| 3rd Author's Name | Toshikazu Mukaihara |
| 3rd Author's Affiliation | Furukawa Electric Co., Ltd.(Furukawa Electric) |
| Date | 2018-12-07 |
| Paper # | OPE2018-131,LQE2018-141,SIPH2018-47 |
| Volume (vol) | vol.118 |
| Number (no) | OPE-348,LQE-349,SIPH- |
| Page | pp.pp.171-176(OPE), pp.171-176(LQE), pp.171-176(SIPH), |
| #Pages | 6 |
| Date of Issue | 2018-11-29 (OPE, LQE) |