Optical Communications

Apolink is a Y Combinator-backed space startup building a LEO data relay constellation for 24/7 real-time satellite connectivity using hybrid RF and optical links.

Apolink

Apolink

Apolink is an on-demand real-time communications service that keeps satellites continuously connected for telemetry and command links.

Coverage	24/7 persistent, pole-to-pole
Link types	Hybrid RF + optical (FSO)
Target orbits	LEO, any orbit (relay)
Partners	GomSpace (RF), RBC Signals, Space Compass
Regulatory	ITAR/EAR compliant, US operations

price on request

AstroGate Labs is a Bengaluru-based space startup pioneering laser communication terminals for nano and small satellites, enabling 1 Gbps space-to-ground data downlinks.

AstroGate Labs

AstroLink Laser Communication Terminal

SWaP-optimized laser communication terminal for CubeSats and NanoSats, 1 Gbps downlink at 1550 nm, integrated fine pointing, ITAR-free, TRL 7.

Data rate (Downlink)	Up to 1 Gbps
Wavelength	1550 nm
Pointing accuracy	±1° bus pointing tolerance
Ground beacon acquisition	±5°
Dimensions	95 × 95 × 80 mm

price on request

Astrolight develops laser communication terminals for space and defense applications. They offer space-to-Earth laser communication terminals and optical ground stations.

Astrolight

ATLAS-2

ATLAS-2 is Astrolight’s second generation SDA compatible low SWaP laser communication terminal designed for space-to-ground and space-to-space links.

Tx/Rx wavelength	1553.3 / 1536.6
Tx Power	< 2 W
Transmit Divergence	±63 μrad at 1/e2
Transmit Data Rate	2.5 Gbps
Fine Pointing Resolution	< 15 µrad

price on request

Astrolight

ATLAS-X-MINI

ATLAS-X-MINI is Astrolight’s gimbal-equipped optical communication terminal for space-to-ground and space-to-space links, building on ATLAS terminals already deployed in orbit.

Transmit (downlink) wavelength	1553.3 nm and 1536.6 nm
Transmit (downlink) optical power	≥ 3500 mW
Communication standard	SDA OCT 3.1 and newer
Tracking & receive (uplink) wavelengths	1536.6 nm and 1553.3 nm
Transmit (downlink) data rate	Up to 2.5 Gbps

price on request

Astrolight

OGS-2.5

Astrolight’s OGS-2.5 is a compact and cost-effective satellite optical communication terminal for high data rate applications.

Aperture Size (Option A)	355 mm (14 ")
Aperture Size (Option B)	508 mm (20 ")
Operational Wavelength	1536 nm & 1553 nm
Supported Modulations	OOK
Downlink Data Rate	1.25/2.5/12.5 Gbps

price on request

Astrolight

POLARIS

POLARIS is a small, gimballed free space optical (FSO) communication solution designed for large naval vessels and smaller unmanned surface vehicles (USVs).

Link Distance	Horizon limited
Data rate	Up to 1 Gbps
Optical Power	Up to 4 W
Electrical Power	200 W
Mass	16 kg

price on request

Celestia Satellite Test & Simulation provides ground-based solutions for satellite simulation, testing, communication, and data processing, including EGSE, TT&C, and Optical Modems.

CELESTIA Satellite Test & Simulation

Eagle-1 Optical Modem

Optical modem optimized for communication with the EAGLE-1 QKD satellite — classical optical terminal validation, programmable tunable seeds.

Form factor	19" rack mountable
Flight heritage	EAGLE-1 QKD satellite (validated)

price on request

Pasadena-based developer of free-space optical communication terminals for drones, balloons, and spacecraft — from gigabit SOT/LROT hardware to the INSPIRE cislunar optical internet.

Chascii

Chascii Single Optical Terminal (SOT)

Compact 1U free-space optical terminal delivering gigabit connectivity for drones, balloons, and spacecraft — 100° steering, dual 850/1550 nm wavelengths, 15W.

Form factor (SOT)	1U
Power consumption	15 W
Data rate	Gigabit
Wavelengths	850 nm, 1550 nm
Steering angle	100 degrees

price on request

Swiss opto-electronics company (part of General Atomics since 2021) developing laser-communication beam-pointing systems, optical ground stations, and free-space/fiber optical communication components.

General Atomics Synopta GmbH

Optical Ground Stations

Stationary and transportable adaptive optical ground stations for laser communication with satellites in GEO/MEO/LEO or deep space.

S-aogs telescope size	> Ø 0.5 m
T-aogs telescope size	Ø 0.25 m to Ø 1 m
Data rate with GEO satellite	> 2 Gbit/s (uplink and downlink)
Feeder link to GEO satellite	> 20 Gbit/s uplink, > 10 Gbit/s downlink, scalable up to Tbit/s
Supported wavelengths	e.g. 1064 nm, 1550 nm

price on request

Glavkosmos coordinates international human spaceflight projects, facilitates satellite launches, develops and supplies rocket components, and provides equipment for space crews.

Glavkosmos

Intersattelite Optical Communication Terminal

An Intersatellite Optical Communication Terminal designed for LEO satellite constellations to enable space internet and communications, supporting various network configurations.

Purpose	Providing communications in the constellation of satellites on LEO for the organization of
Design life	7 years
Lead time	12 months
Flight qualification of the product	No
Possibility to adapt the product to customer requirements	Yes

price on request

Glavkosmos

Intersattelite optical communication terminal 2

The Intersatellite Optical Communication Terminal 2 is designed for high-speed optical communication between spacecraft in Low Earth Orbit (LEO) and other satellites, as well as fo

Design life	7 years
Lead time	12 months
Flight qualification of the product	No
Possibility to adapt the product to customer requirements	Yes
Communication range	not less than 4500 km

price on request

Golbriak Space designs and manufactures optical communication terminals and AI-enabled data hubs for distributed satellite missions, providing fast, secure, and affordable space communications.

US developer of a high-capacity global optical satellite communications network using free-space laser technology to deliver secure, high-throughput broadband anywhere on Earth.

Chinese commercial aerospace startup building a low-Earth-orbit laser (free-space optical) communication satellite network as an alternative to traditional RF satellite links.

Ireland's largest photonics company, building end-to-end optical communication systems for space connectivity.

Mbryonics

STARCOM Optical Communications Terminal

Laser communications terminal for optical inter-satellite links and space-to-ground links — up to 400 Gbps, 80,000+ km link distance, selected by DARPA, ESA, and Airbus Defence and

Usable aperture	50% larger than competitors (per manufacturer)
Link distance	80,000+ km
Data rate	Up to 400 Gbps (by 2027)
Standards compatibility	SDA Standard v3.0, EST, ESTOL, CCSDS
Wavelength	1550 nm (third-party modem compatible)

price on request

Mbryonics

STARLIGHT Optical Modem and Amplifier

Fibre-coupled optical modem and Antenna Control Unit for LEO/MEO/GEO optical inter-satellite and space-to-ground links — under 3.5 kg for modem+ACU, controls up to 4 STARCOM units.

Modem + acu mass	< 3.5 kg
Modem + acu + booster + lna mass	< 4 kg
Total oct mass (1x STARCOM optical head)	< 14 kg
Standards	SDA 3.1, IEEE 802.3 Ethernet, FEC
Orbit compatibility	LEO, MEO, GEO

price on request

Mynaric manufactures optical communication terminals for air, space, and mobile applications, enabling high-speed, secure, and license-free laser communication networks.

Mynaric

HAWK Optical Ground Station

Optical feeder link ground station for LEO/MEO/GEO satellite constellations — 200 Gbps aggregate throughput per site, adaptive optics, compatible with CONDOR Mk3 and TETRA space te

Aggregate throughput	200 Gbps per site
Communication type	Free-space optical (FSO)
Availability	High (site diversity + adaptive optics)
Compatible terminals	CONDOR Mk3, TETRA
Applications	Feeder links for LEO/MEO/GEO constellations

price on request

British defence technology company delivering mission-critical space capabilities — domain awareness, secure communications, PNT, electric propulsion, and test & evaluation — with over half a century of heritage from the Royal Aircraft Esta

QinetiQ Space

Free Space Optical Communications (FSOC)

Laser-based high-speed directional communication system for air, land, maritime, and space platforms — demonstrated >100 km range with simultaneous ISR sensing capability.

Demonstrated range	>100 km (HAPS-to-HAPS)
Spectrum	License-free (optical)
Beam type	Directional point-to-point
Dual mode	Communications + ISR sensing simultaneously
Domains	Air, Land, Maritime, Space (LEO, inter-satellite)

price on request

SatEnlight develops next-generation free-space optical communication systems that use Orbital Angular Momentum (OAM) to multiply channel capacity, enabling faster, more scalable, resilient and secure links for space and terrestrial networks

SatEnlight

OAM Optical Communication Terminal

Free-space optical communication terminal that uses Orbital Angular Momentum (OAM) multiplexing and a patented multi-aperture receiver to multiply link capacity beyond conventional

Multiplexing technique	Orbital Angular Momentum (OAM) mode multiplexing
Receiver architecture	Patented multi-aperture receiver with parallel channel demultiplexing
Turbulence compensation	Integrated turbulence mitigation module (patent-pending electronics)
Target links	Satellite-to-ground, inter-satellite, airborne and terrestrial free-space optical
Key benefit	Capacity multiplication without additional spectrum; increased link security via mode-sele

price on request

US manufacturer (Colorado) of optical inter-satellite communication terminals and GEO relay infrastructure, now a subsidiary of IonQ, Inc.

Skyloom Global Corp.

Scotty LEO User Terminal

LEO user optical terminal enabling multi-Gbps LEO-to-GEO data relay via Skyloom's optical network, up to 20 Gbps.

Network access	Enables access to Skyloom's network via GEO
Data rate	Supports LEO-GEO links up to 20 Gbps
Field of regard	Hemispherical Field Of Regard
Acquisition and tracking	Autonomous acquisition and tracking
Standards compliance	Interoperable with SDA OCT Standard

price on request

Skyloom Global Corp.

Skyloom Optical Data Transport Network (V’GER, Scotty, Uhura, Kirk)

Skyloom is deploying an optical data transport network in space, leveraging small geostationary relay nodes to provide low-latency and high-capacity data transportation services fo

V’ger data rate	1-10 Gbps
V’ger link types	LEO-LEO, LEO-Ground, LEO-Airborne, LEO-Maritime
Scotty link type	LEO-GEO
Scotty LEO-GEO link speed	up to 20 Gbps
Scotty field of regard	Hemispherical

price on request

Space Union is a Lithuanian deep-tech company specializing in laser-directed energy systems for C-UAV defense, space debris mitigation, and satellite optical communications.

Space Union

Satellite Optical Laser Link (Inter-Satellite FSO)

Space Union’s Satellite Optical Laser Link is an extra-high-throughput free-space optical (FSO) laser communication system designed for inter-satellite and satellite-to-gatew

Link type	Free Space Optical (FSO) laser inter-satellite link
Operating environment	Low Earth Orbit (LEO)
Applications	5G extension, IoT/GSM integration, quantum key distribution relay
Operator registration	UAB SPACEUNION registered as ITU operating agency
Network integration	Compatible with existing GSM infrastructure for IoT services

price on request

Stellar Project provides proprietary technology and solutions for light satellites, including optical telecommunication systems and space debris analysis tools.

Stellar Project

LaserCube Laser Communication Terminal

2U laser communication terminal for CubeSats and small satellites delivering >10× higher throughput than RF solutions. Flight-proven on SpaceX Transporter-2.

Form factor	2U (100 × 100 × 200 mm)
Mass	2 kg
Throughput improvement	> 10× vs RF state-of-the-art
Configurations	ISL (up to 2 full-duplex channels) or downlink (1 TX channel)
Pointing system	Patent-pending coarse pointing, no fine pointing required

price on request

Wireless laser communication systems (CENTAURI) and optical ground stations; pioneering inter-satellite optical links from Singapore.

Transcelestial

CENTAURI 25G

World's first commercially available 25 Gbps wireless laser communication terminal, extending the CENTAURI FSOC platform to higher throughput.

Data rate	25 Gbps, full-duplex
Link range	200 m to 3+ km
Deployment time	as little as 0.5 day per link
Spectrum licensing	Not required
Cost per bit	Lower than CENTAURI 10G

price on request

WORK Microwave develops and manufactures RF electronics technologies and products. They create innovative RF electronics and digital signal processing, including satellite communication, optical ground station, virtualized DIFI solutions, d

WORK Microwave

DOG-DA Free Space Optical Detector

The DOG-DA Free Space Optical Detector is a fibre-coupled optical detector designed for the reception of optical free space communication, featuring a highly responsive InGaAs aval

price on request

WORK Microwave

DOG-DA4 Free Space Optical Detector

The DOG-DA4 Free Space Optical Detector is a fibre-coupled optical detector designed for the reception of optical free space communication, featuring four highly responsive InGaAs

Symbol Rates

100 Msps to 10 Gsps (O3K)

price on request

WORK Microwave

DOG-F1 Optical Modem Front-End Digitizer

The DOG-F1 Optical Modem Front-End Digitizer enhances the DOG-M1 Multi-Mission Optical Modem at early stages of signal processing, sampling multi-Gsps signals.

O3K symbol rate	up to 10 Gsps
Warranty	3 years

price on request

WORK Microwave

DOG-M1 Multi-Mission Optical Modem

The DOG-M1 modem is dedicated to support the processing of optical links between space and Earth, designed for multi-mission support to enable effective ground station design.

O3K symbol rate	up to 10 Gsps
Internal storage	for at least 2 LEO passes at maximum bandwidth

price on request