Komori
Other Disclosures6524KOHOKU KOGYO CO.,LTD.Electrical Equipment and Precision Instruments

Developed an optical modulator using single-crystal PLZT thin film that achieves unprecedentedly low drive voltage and low optical loss

We developed an optical modulator that combines low drive voltage with low optical loss by optimizing the single-crystal PLZT thin film and device structure. We will continue making improvements and aim to begin sample shipments in 2028.

Worth reading
71In focus
0–100. This measures how worthwhile something is to read, not how good or bad the company is.
Direction
Improvement
Direction inferred from the company’s description.
Scale
0.2
V·cm (Vπ·L value)
Wording
Conditional
How definitive the wording is.

Announced details

PLZT optical modulatorSingle-crystal PLZT thin-film wafer
Applicable field (uses covered by this announcement)
AI serversData centersHigh-speed, high-capacity optical communications systemsHikari TsushinPhotonic Quantum Computer
Launch date2028 (sample shipments scheduled)
What the company reported numerically
Quantitative Effects

Vπ·L value: 0.2 V·cm

Optical loss: 0.9 dB/cm

10 times the electro-optic effect of conventional general-purpose LN modulators

Optical input power tolerance of up to 1 W (30 dBm)

3 dB bandwidth: 25 GHz

Plans to develop a chip with a transmission speed of approximately 100 GHz

Usage history

エピフォトニクス株式会社 began sample shipments in 2022.

Relationship between the counterparty and the company
KOHOKU KOGYO CO.,LTD.6524
Relationship with the Company

エピフォトニクス株式会社 is a wholly owned subsidiary of KOHOKU KOGYO CO.,LTD. EpiPhotonics USA, Inc. is also identified as a development entity.

Location (as indicated in this announcement)

エピフォトニクス株式会社: Yamato, Kanagawa Prefecture; EpiPhotonics USA, Inc.: San Jose, California, US

Impact on Business Performance

The company aims to fully commercialize the business from 2026 onward. No specific amount of the impact on business performance from this development achievement was disclosed.

The company does not address Contract Value / Offering price.

Source (materials cited by the company)

Conference on Lasers and Electro-Optics (CLEO) 2026; Ministry of Internal Affairs and Communications commissioned research and development project, “Research and Development of Advanced Optical Transmission Technologies Contributing to a Green Society” (JPMI00316)

Announced details
ItemDetails
Names of Products / Services CoveredPLZT optical modulator, Single-crystal PLZT thin-film wafer
Relationship with the Companyエピフォトニクス株式会社 is a wholly owned subsidiary of KOHOKU KOGYO CO.,LTD. EpiPhotonics USA, Inc. is also identified as a development entity.
Launch date2028 (sample shipments scheduled)
Applicable areaAI servers, Data centers, High-speed, high-capacity optical communications systems, Hikari Tsushin, Photonic Quantum Computer
Locationエピフォトニクス株式会社: Yamato, Kanagawa Prefecture; EpiPhotonics USA, Inc.: San Jose, California, US
Quantitative EffectsVπ·L value: 0.2 V·cm, Optical loss: 0.9 dB/cm, 10 times the electro-optic effect of conventional general-purpose LN modulators, Optical input power tolerance of up to 1 W (30 dBm), 3 dB bandwidth: 25 GHz, Plans to develop a chip with a transmission speed of approximately 100 GHz
Usage historyエピフォトニクス株式会社 began sample shipments in 2022.
Impact on Business PerformanceThe company aims to fully commercialize the business from 2026 onward. No specific amount of the impact on business performance from this development achievement was disclosed.
SourceConference on Lasers and Electro-Optics (CLEO) 2026; Ministry of Internal Affairs and Communications commissioned research and development project, “Research and Development of Advanced Optical Transmission Technologies Contributing to a Green Society” (JPMI00316)
Items this document does not state (9)
CounterpartyCounterparty overviewContract ValueOffering priceContract DateAward/certification nameAwarding / certifying bodyRegistration number and expiry dateLocation scale

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

Because we optimized the deposition technology for the single-crystal PLZT thin film and the device structure.

How to read this page

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Developed an optical modulator using single-crystal PLZT thin film that achieves unprecedentedly low drive voltage and low optical loss | KOHOKU KOGYO CO.,LTD. (6524) timely disclosure | Komori