Phoconn is an applied photonics engineering firm. We help technical teams design, integrate, test, and deploy optical systems — from first-principles analysis through experimentally validated, field-ready hardware. Optical systems rarely fail because of theoretical performance limits; they fail at interfaces, tolerances, alignment, packaging, and validation. That is where we work.
We are not a design consultancy.
We are not a simulation shop.
We are the engineering layer that turns optical concepts into hardware that works.
Practical photonic systems engineering requires more than optical design alone. Successful systems depend equally on integration strategy, alignment methodology, test architecture, manufacturability, and long-term stability — all balanced across optics, mechanics, electronics, and thermal behaviour. We bring all of that to each engagement.
Architecture of imaging, sensing, and beam-delivery systems — ray tracing, wavefront analysis, stray light, and tolerance budgeting tied to assembly and test realities.
Chip-to-fiber coupling, hermetic enclosures, adhesive strategy, CTE-matched mounting, and electrical feedthrough specification for photonic modules.
Single-mode, PM, and specialty fiber network design — routing constraints, back-reflection mitigation, connectorisation, and polarisation handling.
Laser diodes, solid-state sources, photodiodes, and APDs — with matched drive electronics, TEC control, dynamic range, and noise floor management.
Active and passive alignment with sensitivity analysis, repeatability studies, and documented procedures for production transfer.
Custom test setups with documented uncertainty, characterisation against spec, and structured root-cause analysis when performance does not match expectation.
Translate physical requirements into a buildable optical architecture — defining system topology, selecting component classes, constructing the tolerance budget, and evaluating how each decision affects alignment, testability, and stability before anything is purchased.
Hands-on support making bench components work together reliably in reproducible hardware. Alignment methodology, fiber routing, packaging co-design, adhesive strategy, and thermal stability — through to a documented assembly process for production transfer.
Custom test setups with documented measurement uncertainty — reducing operator dependence and defining test metrics that correlate to real-world performance. Validation against specification with reports that hold up to engineering scrutiny.
Structured diagnosis of optical failures — mapping the loss or noise budget, isolating variables, and tracing degradation to physical origin. Defined and bounded scope: a root-cause report with corrective recommendations, not an open-ended investigation.
Sustained optical engineering capacity on a retained basis — design, integration, test, and troubleshooting across the programme lifecycle. We carry technical context across phases and function as a senior optical engineering resource without the overhead of a permanent hire.
A direct technical conversation — system requirements, constraints, what you have tried, what data you have. No sales deck.
Optical analysis of the problem and a proposed approach with defined scope, risks, and decisions the work will support.
Work performed against defined deliverables — design docs, test data, alignment procedures, root-cause reports. Surprises flagged early.
Deliverables documented for use without us. Where engagements continue, technical context carries forward across phases.
Optical systems fail for physical reasons.
We are engineers who find them.
Phoconn is a specialist applied photonics engineering practice. We work with technical teams building optical systems who need engineering capability that can handle the physics without being handed a simplified brief.
We do not have a product roadmap. We do not have an off-the-shelf solution. What we have is a deep, practical understanding of how light behaves in real optical systems — and the engineering discipline to translate that understanding into hardware that works, can be tested, and can be reproduced.
Practical photonic systems engineering requires more than optical design alone. Successful systems depend equally on integration, alignment, test, manufacturability, and long-term stability.
We do not confuse simulation with hardware. Optical models inform decisions. They do not replace measurement. We build, align, and test.
Testability is not optional. A system that cannot be unambiguously measured cannot be validated. We treat testability as a design requirement from day one.
We write down what we learn. Every engagement produces documentation your team can use without us present.
We say what we find. If the root cause is in the original specification, we say so early — not in the close-out report.
Cross-disciplinary by necessity. Optical performance is shaped by mechanics, thermal, electronics, and process — we work across all of them.
A good first conversation is technical. Come with your system requirements, your constraints, and your current unknowns — and we will tell you honestly whether and how we can help.