In the quiet convergence of light and sound, a Norwegian microphone company and an Irish manufacturing specialist have joined forces to solve one of photonics' oldest frustrations: how to assemble precision optical components at the speed and cost that mass markets demand. sensiBel's optical MEMS microphones — which measure sound by tracking the movement of a diaphragm in femtometers of light — have long held promise, but promise requires infrastructure. By adopting X-Celeprint's Micro-Transfer Printing process, sensiBel has found the manufacturing bridge between a remarkable sensor and the wo
sensiBel Taps X-Celeprint to Mass-Produce Optical MEMS Microphones
Thousands of optical modules on a single wafer
Mark
So sensiBel makes microphones. What makes theirs different from the ones already in phones?
Mimi
They use light instead of the traditional capacitive sensing. A MEMS diaphragm vibrates with sound, and optoKore measures that vibration optically—by tracking how the light path changes. It's more precise and gives them a much wider dynamic range.
Luke
But that's the sensor design. The announcement is really about manufacturing, right? They couldn't make optoKore at scale before.
Mimi
Exactly. Building an optical module requires assembling tiny photonic components—lasers, detectors, optics—with nanometer precision. Traditional assembly is slow and expensive. X-Celeprint's Micro-Transfer Printing does it in arrays, thousands per wafer.
Mark
And that matters because?
Mimi
Cost and speed. If you can only assemble components one at a time, you can't compete in consumer electronics. You need volume. This partnership lets sensiBel move from lab quantities to actual production volumes.
Luke
Do we know if they're actually shipping these yet, or is this just a capability announcement?
Mimi
The source says sensiBel has first-generation MEMS microphones with 80dBA SNR. The partnership is about scaling that production. So they exist, but the volume ramp is what's new.
Mark
What's the 80dBA number mean in practical terms?
Mimi
Signal-to-noise ratio. Higher is better. 80dBA is very good for a microphone—it means the microphone itself isn't adding much noise to the signal. They also claim over 146dB acoustic overload point, which means they can handle very loud sounds without distorting.
Luke
Those are impressive specs. But we should note: we're taking sensiBel's word for those numbers. The source doesn't cite independent testing.
Mimi
Fair. But X-Celeprint's CEO also called it "ground-breaking," so there's at least external validation that something interesting is happening here.
Mark
Where does this go next? Is this just about microphones?
Mimi
The source mentions "future acoustic sensors." And X-Celeprint works with lasers, modulators, all kinds of photonic components. So the manufacturing capability could apply to other optical devices, not just audio.
The Pulse
- The acoustic sensor industry faces a quiet disruption: optical MEMS microphones offer dramatically superior performance over capacitive designs, but only if someone can figure out how to build them by the millions.
- Traditional die-bonding — attaching optical components one painstaking piece at a time — has kept high-performance photonic assembly slow, expensive, and stubbornly unscalable.
- X-Celeprint's Micro-Transfer Printing breaks that bottleneck by moving entire arrays of lasers, photodetectors, and amplifiers simultaneously onto a single wafer, collapsing production time and cost.
- sensiBel's optoKore module — capable of detecting diaphragm displacement at femtometer precision and delivering 80dBA SNR with a 146dB overload ceiling — can now be manufactured at consumer-electronics volume.
- The partnership lands as a structural shift: optical MEMS microphones are no longer a laboratory achievement but a production-ready category poised to challenge the capacitive microphones embedded in smartphones, hearing aids, and industrial devices.
In the quiet convergence of light and sound, a Norwegian microphone company and an Irish manufacturing specialist have joined forces to solve one of photonics' oldest frustrations: how to assemble precision optical components at the speed and cost that mass markets demand. sensiBel's optical MEMS microphones — which measure sound by tracking the movement of a diaphragm in femtometers of light — have long held promise, but promise requires infrastructure. By adopting X-Celeprint's Micro-Transfer Printing process, sensiBel has found the manufacturing bridge between a remarkable sensor and the world that might one day hold it in every pocket.
sensiBel has formed a manufacturing partnership with X-Celeprint, an Irish company specializing in Micro-Transfer Printing — a process that assembles heterogeneous optical and electronic components onto a single substrate with nanoscale precision and at high volume. The agreement centers on scaling production of optoKore, the optical-detection module at the core of sensiBel's acoustic MEMS microphones.
The challenge the partnership addresses is structural. Photonics has long struggled to combine different component types — lasers, photodetectors, modulators, passive optics — without resorting to slow, costly die-bonding that attaches each piece individually. X-Celeprint's approach transfers multiple device types in arrays rather than one at a time, enabling thousands of optical modules per wafer with consistent repeatability.
optoKore is what distinguishes sensiBel's microphones from conventional designs. Rather than using capacitive or piezoelectric sensing, the module measures sound by tracking how a MEMS diaphragm displaces light — from femtometer to micrometer scale — and converts those optical changes directly into a digital signal. The result is a first-generation microphone with an 80dBA signal-to-noise ratio, an acoustic overload point above 146dB, and a dynamic range exceeding 132dB.
For sensiBel's CEO Kieran Harney, the partnership resolves a long-standing constraint: the ability to manufacture optoKore at wafer scale without sacrificing the precision that makes it function. X-Celeprint's CEO Peter Smyth framed the collaboration as evidence that Micro-Transfer Printing can democratize high-performance photonics beyond niche applications.
The deal marks a transition from prototype to production for optical MEMS microphones, and suggests the real bottleneck was never sensor design but manufacturing economics. With that barrier lowered, sensiBel is positioned to enter markets — consumer electronics, hearing aids, industrial audio — where traditional MEMS microphones have long held dominance, while pointing toward a broader future of automated, array-based photonic assembly.
sensiBel has struck a manufacturing partnership with X-Celeprint, an Irish company that specializes in Micro-Transfer Printing—a process for assembling tiny components with nanoscale precision onto a single substrate at high volume. The deal centers on scaling production of optoKore, sensiBel's optical-detection module that sits at the heart of its acoustic MEMS microphones.
The problem sensiBel was solving is old: the photonics industry has struggled to assemble heterogeneous components—different types of optical and electronic parts—at scale without losing precision or spending a fortune. Traditional die-bonding, where individual components are attached one at a time, is slow and expensive and doesn't scale well. X-Celeprint's Micro-Transfer Printing sidesteps that bottleneck by transferring multiple device types—lasers, photodetectors, modulators, amplifiers, passive optics—in arrays rather than individually. The result is speed, repeatability, and the ability to produce thousands of optical modules on a single wafer.
For sensiBel, this matters because optoKore is what makes its microphones different. The module works by measuring the displacement of a MEMS diaphragm using light. As sound waves hit the diaphragm and it moves, the optical path changes, and the microphone converts those changes directly into a digital audio signal. The precision required is extreme: optoKore can measure displacement from femtometer-level (10 to the minus 15 meters) up to micrometer-level (10 to the minus 6 meters). That range of sensitivity enables sensiBel's first-generation MEMS microphones to achieve an 80dBA signal-to-noise ratio, an acoustic overload point greater than 146 decibels, and a dynamic range exceeding 132 decibels—specifications that put them in the high-performance category.
Kieran Harney, sensiBel's CEO, framed the partnership as a solution to a long-standing industry constraint. By moving optoKore production to Micro-Transfer Printing and aligning it with standard MEMS manufacturing processes at wafer scale, sensiBel can now produce optical modules in volume without sacrificing the nanoscale precision that makes them work. The shift opens the door to consumer electronics applications, where volume demand is high and cost pressure is real.
X-Celeprint, headquartered in Cork, operates production capacity at selected locations in Europe and Asia and manufactures the automated tools required to run Micro-Transfer Printing at yield. Peter Smyth, X-Celeprint's CEO, positioned the partnership as validation of the technology's potential to democratize high-performance photonics. sensiBel's optical MEMS microphones represent a category shift—using light instead of traditional capacitive or piezoelectric sensing to capture acoustic information—and the manufacturing partnership is the infrastructure move that makes scaling that innovation economically feasible.
The deal signals that optical MEMS microphones are moving from prototype to production, and that the bottleneck was never the sensor design itself but the ability to manufacture the optical detection layer reliably and at cost. With that solved, sensiBel is positioned to compete in markets where traditional MEMS microphones have dominated, from smartphones to hearing aids to industrial audio applications. The partnership also hints at a broader shift in how heterogeneous photonic devices will be assembled in the future—less hand-assembly, more automated array transfer, more precision at lower cost.
Notable Quotes
By moving to Micro-Transfer Printing, sensiBel can make thousands of optical modules on a single wafer, positioning the company to meet demand for high-volume consumer electronics applications.— Kieran Harney, CEO, sensiBel
sensiBel is redefining acoustic excellence in a micro-scale form factor by using X-Celeprint's platform to scale production of its optical-detection module.— Peter Smyth, CEO, X-Celeprint
Want the full story?
Read the original at audioXpress ↗
Business