Market Context — Why This Technology, Why Now

The relentless growth of data traffic, fueled by cloud computing, AI, and streaming services, is pushing optical communication infrastructure to its limits. This creates immense pressure on manufacturers and operators to deliver higher performance and reliability at lower costs. Efficient, accurate, and cost-effective evaluation of optical modulators is paramount to meet these demands, ensuring the integrity of next-generation networks and data centers.

Key Competitive Advantages
01

Could reduce capital expenditure by ~60% compared to conventional complex and expensive dedicated evaluation equipment, by utilizing general-purpose photodetectors (PD) and analog-to-digital converters (ADC).

02

Applies phase retrieval to estimate electrical-to-optical response imbalance between I/Q channels of optical IQ modulators with higher precision and speed than conventional methods.

03

Utilizes intensity information from optical modulator output signals, allowing integration into existing optical communication device manufacturing inspection processes with minimal modification.

Market Opportunity
Optical Communication Device Manufacturers
$2B–$6B globally (AI est.)
As demand for 5G/6G-compatible optical modulators increases, high-precision, high-speed quality evaluation on manufacturing lines becomes essential, driving strong demand for productivity improvements through this technology.
Optical component manufacturers High-speed transceiver producers Semiconductor foundries with photonics divisions
Data Center Operators
$10B–$35B globally (AI est.)
With surging data traffic, maintaining the reliability and performance of optical modules and modulators within data centers is crucial, leading to increased investment in efficient evaluation technologies.
Hyperscale cloud providers Colocation data center operators Network infrastructure integrators
Telecommunications Carriers
$10B–$35B globally (AI est.)
In optical network construction and operation, optical modulator quality directly impacts communication service quality. Adoption could enhance supplier selection and in-house equipment evaluation accuracy.
Major telecom service providers Network equipment vendors Fiber optic network infrastructure developers
IP Defensibility — Why Competitors Can't Replicate This
What This Patent Covers

This patent protects a system for estimating electrical-to-optical response imbalance in optical IQ modulators using general-purpose photodetectors and ADCs, leveraging a phase retrieval algorithm. The claims were robustly established through multiple rejections, demonstrating strong novelty and inventiveness against eight prior art references, indicating a highly stable and difficult-to-invalidate right.

Competitive White Space

This patent primarily covers the evaluation methodology for optical modulators. White space exists in developing novel optical modulator designs or integrating this evaluation into a comprehensive, AI-driven network diagnostic and self-optimization system.

Economic Impact
~$80K/year estimated evaluation cost reduction per facility (est.)
estimated ROI · USD · AI analysis
ROI Calculation Logic

In the optical modulator evaluation process, assuming conventional dedicated evaluation equipment has annual depreciation/maintenance costs of ~$130K (AI est.) and specialized operator labor costs of ~$65K (AI est.). Implementing this technology could reduce equipment-related costs by 50% (~$65K (AI est.)) through simplified equipment use, and labor costs by 20% (~$15K (AI est.)) due to reduced evaluation time. This projects a total annual cost reduction of ~$80K (AI est.).

Speed to Market
6× faster than in-house development
This technology estimates imbalance using a phase retrieval algorithm based on optical modulator intensity information, with the algorithm itself already established. It comprises highly versatile components like photodetectors (PD) and analog-to-digital converters (ADC), minimizing new hardware development burden. Key technical challenges are concentrated in software implementation, and integration into existing evaluation systems is straightforward, potentially shortening time-to-market by approximately 2.5 years compared to in-house development.
Competitive Positioning

X: Cost Efficiency
Y: Evaluation Precision & Speed

Business Models & Applications
💡 Evaluation System Licensing
Generate revenue by providing software licenses and related technical support for optical modulator evaluation systems based on this technology to optical device manufacturers.
🔬 Evaluation Service Provision
Establish a new revenue stream by building in-house evaluation facilities utilizing this technology and offering optical modulator quality evaluation services to external companies.
🤝 Joint Development & Customization
Collaborate with specific optical modulator manufacturers or telecom operators to develop customized evaluation systems based on this technology, providing solutions tailored to their needs.
Adjacent Application Opportunities
🏥 Medical & Healthcare
Non-Invasive Biological Tissue Imaging
Phase retrieval technology could apply to imaging within highly scattering biological tissues. Similar to optical IQ modulator imbalance estimation, recovering phase information from scattered light intensity could enable non-invasive, high-resolution tomographic imaging of biological tissues, potentially improving diagnostic accuracy by 20-30%.
🏭 Industrial Sensors & Inspection
High-Precision Surface Shape & Defect Inspection
This technology could be repurposed for inspecting product surface shapes and microscopic defects in manufacturing. By reconstructing phase information from light reflection/scattering patterns, it could detect nano-level surface roughness or minute defects, previously challenging with conventional image processing, at speeds up to 5x faster.
🚗 Autonomous Driving & LiDAR
High-Precision Distance & Velocity Measurement
In LiDAR (Light Detection and Ranging) systems, combining reflected light intensity information with phase retrieval could measure not only object distance but also highly precise velocity and vibration states. This has the potential to significantly enhance environmental perception capabilities for autonomous vehicles, extending detection range by 15%.
Integration Roadmap — Estimated 12-Month Deployment
Phase 1: Technical Validation & Requirements Definition
Duration: 3 months
Validate the core algorithm's compatibility with the licensee's existing evaluation environment. Define specific optical modulator types and performance requirements to establish the system design foundation.
Phase 2: Prototype Development & Testing
Duration: 6 months
Develop a prototype system combining general-purpose PD/ADC and software based on defined requirements. Conduct performance tests in an internal lab environment to confirm initial accuracy and stability.
Phase 3: Pilot Evaluation & Production Deployment
Duration: 3 months
Deploy the prototype into a manufacturing line for pilot evaluation in a real production environment. Conduct final adjustments based on collected data, aiming for full operational transition and evaluation process optimization.
Technical Feasibility
This technology uses general-purpose photodetectors (PD) and analog-to-digital converters (ADC), with imbalance estimation primarily driven by software algorithms, making integration into existing optical communication device manufacturing lines extremely straightforward. The patent claims clearly define the collaboration between these versatile components and the processing unit, establishing a technical basis for additive integration into existing inspection systems without significant capital investment.
Success Scenario
Implementing this technology could reduce optical modulator inspection time by 20% and potentially improve manufacturing line throughput by 15%. This is estimated to strengthen quality control and shorten time-to-market for final products, while curbing new investments in expensive specialized evaluation equipment.
Patent Record
APPLICATION NO.
特願2020-048731
REGISTRATION NO.
7616628
FILING DATE
2020/03/19
GRANT DATE
2025/01/08
EXPIRATION DATE
2040/03/19
PATENT HOLDER
国立研究開発法人情報通信研究機構
Examination History
2023年02月14日
出願審査請求書
2024年03月05日
拒絶理由通知書
2024年04月25日
手続補正書（自発・内容）
2024年04月25日
意見書
2024年07月30日
拒絶理由通知書
2024年09月05日
手続補正書（自発・内容）
2024年09月05日
意見書
2024年12月17日
特許査定