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High-Speed Photoreceiver Modules, Fiber-Coupled OEM Package
Single Mode, 40 GHz,
Compact, Hermetically Sealed Package for OEM Applications
We Design, Develop, and Manufacture Equipment up to 70 GHz
Questions? Demo Unit Requests?
Custom or OEM Applications?
The RX40AF photoreceiver is an amplified InGaAs detector with a transimpedance amplifier, variable gain amplifier, and 50 Ω buffer, as illustrated in the diagram below. It features adjustable gain, adjustable frequency response shape (peaking), and flat group delay (and/or frequency response), making it excellent for time domain measurements. The receiver also offers an automatic gain control option for maintaining constant output when input levels vary. Each detector consists of a fiber-coupled, hermetically sealed microwave detector module that enables it to be easily used for OEM applications (see the Operation tab for details).
The RX40AF photoreceiver utilizes a 9 µm core SMF-28 single mode fiber, and optical input can be coupled from an FC/PC-terminated fiber via the FC bulkhead connector. Users can purchase single mode hybrid patch cables to facilitate the connection of optical cables with different connector types. The RF signal outputs via AC-coupled, differential CML RF connectors, which minimize signal noise and can provide high-speed data rates and require no external terminating resistors. Custom units with FC/APC connectors also available upon request; please contact Tech Support with inquiries.
The performance of each photoreceiver is factory tested, and the individualized test results are provided with each receiver. Please contact Tech Support if you would also like to receive a data file containing these test results.
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Internal Block Diagram Showing the Photodiode, Amplifier Stages,
Control Pins, and Differential RF Outputs
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The RX40AF photoreceiver features adjustable peaking (frequency response shape), which can be set through the Peaking Adjust pin outs (PKL and PKH). This graph illustrates one setting: Gain Control = 1.3 V, PKL = 0.0 V, and PKH = 2.7 V.
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Please reference the drawing to the right for connection options. Unpack the unit carefully making sure to take ESD precautions. For detailed operation procedures, refer to the individual product spec sheet by clicking the Support Docs icon () for the specific item below.
ESD Sensitive Components: Please note that the components inside the RX40AF module are ESD sensitive. Take all appropriate precautions to discharge personnel and equipment before making any electrical connections to the unit. This especially applies to coaxial connecting cables that can accumulate capacitive charge.
Janis Valdmanis, Ph.D. Optics
Custom and OEM Options
When your application requirements are not met by our range of catalog products or their variety of user-configurable features, please contact me to discuss how we may serve your custom or OEM needs.
Request a Demo Unit
Explore the benefits of using a Thorlabs high-speed instrument in your setup and under your test conditions with a demo unit. Contact me for details.
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The MX40B Digital Reference Transmitter
Design, Manufacturing, and Testing Capabilities
Thorlabs' Ultrafast Optoelectronics Team designs, develops, and manufactures high-speed components and instrumentation for a variety of photonics applications having frequency responses up to 70 GHz. Our extensive experience in high-speed photonics is supported by core expertise in RF/microwave design, optics, fiber optics, optomechanical design, and mixed-signal electronics. As a division of Thorlabs, a company with deep vertical integration and a portfolio of over 20,000 products, we are able to provide and support a wide selection of equipment and continually expand our offerings.
Our catalog and custom products include a range of integrated fiber-optic transmitters, modulator drivers and controllers, detectors, receivers, pulsed lasers, variable optical attenuators, and a variety of accessories. Beyond these products, we welcome opportunities to design and produce custom and OEM products that fall within our range of capabilities and expertise. Some of our key capabilities are:
Overview of Custom and Catalog Products
Our catalog product line includes a range of integrated fiber-optic transmitters, modulator drivers and controllers, detectors, pulsed lasers, and accessories. In addition to these, we offer related items, such as receivers and customized catalog products. The following sections give an overview of our spectrum of custom and catalog products, from fully integrated instruments to component-level modules.
To meet a range of requirements, our fiber-optic instruments span a variety integration levels. Each complete transmitter includes a tunable laser, a modulator with driver amplifier and bias controller, full control of optical output power, and an intuitive touchscreen interface. The tunable lasers, modulator drivers, and modulator bias controllers are also available separately. These instruments have full remote control capability and can be addressed using serial commands sent from a PC.
Customization options include internal laser sources, operating wavelength ranges, optical fiber types, and amplifier types.
Our component-level, custom and catalog fiber-optic products take advantage of our module design and hermetic sealing capability. Products include detectors with frequency responses up to 50 GHz, and we also specialize in developing fiber-optic receivers, operating up to and beyond 40 GHz, for instrumentation markets. Closely related products include our amplifier modules, which we offer upon request, variable optical attenuators, microwave cables, and cable accessories.
Customization options include single mode and multimode optical fiber options, where applicable, and detectors optimized for time or frequency domain operation.
Our free-space instruments include detectors with frequency responses around 1 GHz and pulsed lasers. Our pulsed lasers generate variable-width, nanosecond-duration pulses, and a range of models with different wavelengths and optical output powers are offered. User-adjustable repetition rates and trigger in/out signals provide additional flexibility, and electronic delay-line products enable experimental synchronization of multiple lasers. We can also adapt our pulsed laser catalog offerings to provide gain-switching capability for the generation of pulses in the 100 ps range.
Customization options for the pulsed lasers include emission wavelength, optical output powers, and sub-nanosecond pulse widths.