Title:
光送信器
Document Type and Number:
Japanese Patent JP7343807
Kind Code:
B2
Abstract:
In an EADFB laser with an integrated SOA, a new configuration in which deterioration of optical waveform quality is solved or mitigated while taking advantage of characteristics that the same layer structure can be used and the manufacturing process can be simplified is shown. In an optical transmitter of the present disclosure, a carrier density is optimized depending on a light intensity inside the SOA and an amount of carrier consumption. The SOA is electrically separated into a plurality of regions, and a current is injected into each region independently. The divided SOA region is configured so that a length of the SOA region becomes shorter as a region is farther from an incidence end of the SOA. Further, for the divided SOA, an amount of carrier consumption increases as the SOA region is farther from the incidence end, so that a current injection amount is increased.
Inventors:
Takahiko Shindo
Chen Ming Chen
Ji Kanazawa
Chen Ming Chen
Ji Kanazawa
Application Number:
JP2021548092A
Publication Date:
September 13, 2023
Filing Date:
September 26, 2019
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H01S5/026; H01S5/12; H01S5/50
Domestic Patent References:
| JP2017098342A | ||||
| JP2018074098A | ||||
| JP2011165823A | ||||
| JP2007103589A |
Foreign References:
| WO2018131227A1 | ||||
| US20170179679 |
Attorney, Agent or Firm:
Patent Attorney Tani / Abe Patent Office
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