Exaslos Introduces 840nm SLEDs

Exalos AG of Schlieren, Switzerland has introduced a new 840nm wavelength Super Luminescent Light Emitting Diode (SLED) that can provide more than 20 mW of power. The device expands the company’s portfolio of what the company calls SLEDs.

Thanks to their high output and broad spectral bandwidth, Exalos says that these 840-nm SLEDs are especially suited for Medical Imaging applications including fiber optic sensor applications and optical coherence tomography (OCT). For SD-OCT applications, the higher output power from the SLED creates a higher asymmetric splitting ratios in the interferometer and therefore lower losses for the received OCT signal. These lower losses and higher asymmetric splitting ratios enable higher acquisition speeds or higher sensitivity.

Exalos SLED performance comparison to LED and LD

Surgical Ophthalmic Systems or Multi-Modal Imaging Systems Can Use Exalos SLEDs

These higher-power SLEDs also help realize surgical ophthalmic systems or multi-modal imaging systems with a shared OCT path. With such systems, the shared OCT path results in higher losses. For fiber sensing, higher-power broadband sources are required for longer-range systems.

The 840-nm SLEDs can deliver an output power of over 20 mW from a single-mode fiber, and they have 3-dB spectral bandwidths of more than 50 nm. The standard product comes in a 14-pin Butterfly housing with an FC/APC connector and a monitor photodiode.

Exalos based all of these SLEDs on the company’s proprietary design. The new high-power devices are currently available for delivery. Exalos will exhibit these high power 840nm SLED devices at BIOS and PW in San Francisco January 27th to February 1st.

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