ROF-PD 10GHz High Speed Fiber Photodetector Light Detection Module

Name: ROF-PD 10GHz High Speed Fiber Photodetector Light Detection Module
Brand: BEIJING ROFEA OPTOELECTRONICS CO,. LTD.
Availability: InStock

Description

ROF-PD 10G High-Speed Photodetector Light Detection Module

The ROF-PD 10G high-speed photodetector light detection module is an advanced optoelectronic receiver engineered for demanding high‑frequency optical applications. Utilizing a high‑performance 10 GHz PIN photodiode, this module offers a typical responsivity of 0.8 A/W at 1550 nm and a wide spectral response range from 1100 nm to 1650 nm, making it ideal for C‑band and L‑band fiber‑optic systems as well as longer‑wavelength test and measurement setups. Its integrated transimpedance and post‑amplifier stage deliver a gain of up to 40 V/W, enabling the detection of low‑level optical signals with high electrical output while maintaining low noise and excellent linearity.

Designed for high‑speed communications and optical test environments, the ROF-PD 10G module provides a 3 dB bandwidth up to 10 GHz with a corresponding rise time of approximately 35 ps. This bandwidth and temporal performance are comparable to many 10 Gb/s and even pre‑emphasis‑optimized 25 Gb/s receiver front ends found in contemporary optical communication systems. The combination of high bandwidth and flat gain response across the working frequency range ensures accurate reproduction of fast optical pulses, clean eye diagrams, and minimal waveform distortion, which are critical for BER testing, digital link characterization, and high‑frequency modulation analysis.

The module is optimized for both single‑mode and multimode fiber operation, allowing flexible integration into a wide variety of laboratory and field systems. It supports FC/PC and FC/APC fiber connectors, enabling straightforward connection to standard telecom‑grade patch cords and sensor leads. The polarization dependent loss is carefully controlled, typically around 0.2 dB and not exceeding 0.6 dB, helping to maintain stable, repeatable performance even in polarization‑varying environments. With an optical return loss of approximately −35 dB, the module minimizes back‑reflection into upstream lasers and active components, which is especially important when working with narrow‑linewidth sources and coherent detection setups.

On the electrical side, the ROF-PD 10G features a 50 Ω SMA female output connector and an output impedance matched to 50 Ω, allowing it to interface seamlessly with oscilloscopes, sampling oscilloscopes, high‑speed digitizers, vector network analyzers, and RF test instruments. Electrical return loss is typically better than −10 dB from DC to 10 GHz, which helps maintain signal integrity and reduce reflections in high‑frequency measurement chains. The module operates from a single +12 V DC supply, simplifying power integration in benchtop test setups, rack systems, and OEM platforms.

With its combination of high sensitivity, wide dynamic range, and robust mechanical construction, this photodetector module is well suited for high‑speed fiber‑optic communication links, microwave‑over‑fiber and radio‑over‑fiber (ROF) systems, and next‑generation access network development. It provides reliable performance for R&D labs engaged in high‑data‑rate system prototyping, modulation format evaluation, and component characterization. The fast response also makes it an excellent choice for high‑speed optical pulse detection, timing distribution, and precision optical trigger applications where low timing jitter and faithful pulse reproduction are required.

In addition to communication uses, the ROF-PD 10G is well adapted for distributed and point‑type fiber sensing schemes, including systems based on Brillouin scattering. Its bandwidth and sensitivity enable the detection of subtle backscattered or modulated signals in fiber‑optic sensing configurations, supporting high‑resolution measurement of strain, temperature, and vibration over long distances. By combining single‑mode or multimode fiber inputs with low dark current (on the order of several nA at 25 °C) and stable responsivity, the module helps ensure a high signal‑to‑noise ratio even in challenging sensing environments.

Mechanically, the ROF-PD 10G light detection module is delivered in a compact housing of approximately 100 mm × 100 mm × 34 mm. This footprint is suitable for dense integration into 19‑inch rack chassis, portable test instruments, or bespoke system enclosures. The device is rated for operation from −10 °C to +60 °C, with storage temperatures from −40 °C to +85 °C and relative humidity from 5 % to 90 %, offering a level of environmental robustness in line with many lab and light industrial applications. Maximum input optical power is specified around 10 mW, which supports a broad range of telecom and sensing power levels while safeguarding the photodiode from over‑illumination.

Specifications

Diode Type:	Indium Gallium Arsenide (InGaAs)
Wavelength Of Operation (Typical):	1550 nm
Spectral Range:	1100 – 1650 nm
Peak Responsivity (Rmax):	0.8 A/W
Peak Quantum Efficiency:	Not Specified
Max Frequency Response:	DC - 10 GHz
Active Area:	Not Specified
Dark Current:	Not Specified
Package Type:	Custom Package
Built-In Amplifier:	Not Specified
Product Model:	ROF-PD-10G
Spectral Range:	1100–1650 nm
Response Wavelength (min):	1100 nm
Response Wavelength (max):	1650 nm
-3 DB Bandwidth:	10 GHz
Dark Current (Typ):	10 nA @ 25 ºC
Responsivity:	0.8 A/W @ 1550 nm
Rise Time:	35 ps
Polarization Dependent Loss (Typ):	0.2 dB
Polarization Dependent Loss (Max):	0.6 dB
Optical Return Loss:	-35 dB
Gain:	40 V/W
Electrical Return Loss S22:	≤ -10 dB @ DC–10 GHz
Output Impedance:	50 Ω
Operating Voltage (nominal):	DC +12 V
Module Dimensions (L×W×H):	100 × 100 × 34 mm
Input Fiber Type:	Single-mode / multimode fiber
Fiber Connector Options:	FC/PC, FC/APC
Output Connector:	SMA (female)
Maximum Input Optical Power:	10 mW
Operating Temperature Range:	-10 to +60 ºC
Storage Temperature Range:	-40 to +85 ºC
Humidity (non-condensing):	5–90 %RH
Operating Wavelength Option:	1100–1650 nm
Fiber Mode Options:	SM (single mode), MM (multi mode)
Connector Type Options:	FP (FC/PC), FA (FC/APC)
Coupling Method Options:	DC, AC

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Features

10 GHz High-Speed Bandwidth – True 3 dB bandwidth up to 10 GHz with typical 35 ps rise time, ideal for high‑speed optical pulse detection and 10G optical communication links.
Wide Spectral Response (1100–1650 nm) – Optimized for O-, E-, S-, C- and L-band operation, covering common telecom wavelengths such as 1310 nm and 1550 nm for maximum application flexibility.
High‑Performance 10 GHz PIN Photodiode – Integrated high‑speed PIN detector delivers low noise, high sensitivity optical‑to‑electrical conversion for demanding RF and microwave photonics systems.
High Responsivity and Gain – Typical responsivity of 0.8 A/W at 1550 nm and transimpedance gain of 40 V/W provide strong electrical output signals even at low optical input power.
Single-Mode / Multi-Mode Fiber Input – Flexible input interface supports both single‑mode and multi‑mode fibers for easy integration into various fiber networks and laboratory setups.
Standard FC/PC or FC/APC Fiber Connectors – Available with FC/PC (FP) or low‑reflection FC/APC (FA) connectors to minimize back‑reflection and ensure stable, repeatable coupling.
50 Ω SMA (f) RF Output – DC–10 GHz SMA female output with 50 Ω impedance and typical electrical return loss S22 ≈ −10 dB for direct connection to oscilloscopes, analyzers, and RF instruments.
DC or AC Coupling Options – Configurable coupling method (DC or AC) to match system requirements for time‑domain pulse detection or RF/microwave signal measurement.
Excellent Polarization and Return Loss Performance – Low polarization dependent loss (PDL ≤ 0.6 dB, typically 0.2 dB) and optical return loss around −35 dB for stable, polarization‑insensitive measurements.
Compact, Robust Module Design – 100 × 100 × 34 mm metal housing provides mechanical stability, effective shielding, and convenient integration into benchtop or rack‑mount test setups.
Convenient +12 V DC Operation – Operates from a single DC +12 V supply, simplifying power requirements for laboratory, production testing, and field deployment.
Wide Operating Temperature Range – Reliable performance from −10 °C to +60 °C with storage from −40 °C to +85 °C and humidity tolerance of 5–90% RH, suitable for diverse environments.
Designed for High‑Speed Optical Communication – Ideal front‑end detector module for 10G optical communication systems, fiber‑optic transmit/receive testing, and eye diagram analysis.
Optimized for RF over Fiber (ROF) Links – High bandwidth and low noise characteristics make it well‑suited for microwave and millimeter‑wave analog RF‑over‑fiber links and photonic down‑conversion.
Excellent for Optical Fiber Sensing – Supports Brillouin and other distributed optical fiber sensing systems where high‑speed, high‑sensitivity detection of backscattered or modulated light is required.
Low Dark Current – Typical dark current in the nA range at 25 °C minimizes noise, improving dynamic range and detection sensitivity in low‑light applications.
Protected Operating Limits – Maximum input optical power of 10 mW and specified operating voltage of 12 V help protect the detector and ensure long‑term reliability.
Customizable Configurations – Ordering options for fiber type (SM/MM), connector style (FC/PC or FC/APC), bandwidth, and coupling (DC/AC) allow tailoring to specific system requirements.
Professional OEM/ODM Support – Developed by a professional and advanced manufacturer of photoelectric products, with support for customized modules and integration into larger systems.

Applications

High‑Speed Optical Fiber Communication Links (up to 10 Gbit/s)
Designed for 10 GHz operation, the ROF‑PD High‑Speed Photodetector Light Detection Module is ideal for OC‑192/STM‑64, 10GbE, and other high‑data‑rate optical links in telecom and datacom networks. It is used in optical receivers, test points, and performance monitoring ports for long‑haul, metro, and data center interconnect systems in the 1100–1650 nm band.
Radio‑over‑Fiber (ROF) and Microwave Photonics
With its wide 3 dB bandwidth up to 10 GHz, 50 Ω SMA(f) output, and excellent electrical return loss, this module is suitable for radio‑over‑fiber front‑ends, microwave photonic links, and antenna remoting. It converts modulated optical carriers into RF electrical signals for 5G/4G fronthaul, distributed antenna systems (DAS), satellite IF over fiber, and radar signal distribution.
Brillouin and Distributed Fiber Sensing Systems
The module’s high responsivity (≈0.8 A/W at 1550 nm), low polarization dependent loss, and high gain (≈40 V/W) make it well‑suited for Brillouin Optical Time‑Domain Analysis (BOTDA, BOTDR) and other distributed sensing techniques. It is used to detect weak backscattered or stimulated Brillouin signals in structural health monitoring, oil and gas pipeline surveillance, and perimeter security sensing.
High‑Speed Optical Pulse Detection and Characterization
With a typical rise time of 35 ps and 10 GHz analog bandwidth, the ROF‑PD module is an excellent tool for measuring and monitoring picosecond/nanosecond laser pulses. It serves in laboratories and production lines for mode‑locked lasers, Q‑switched lasers, and fast optical modulators where real‑time temporal pulse analysis is required using oscilloscopes and sampling scopes.
Optical Time‑Domain Reflectometry (OTDR) and Fault Localization
The high sensitivity and low noise characteristics support use in high‑resolution OTDR and reflectometry systems. It can be integrated in instruments used for locating fiber breaks, splice losses, and connector reflections in telecom, CATV, and enterprise fiber‑optic networks.
Coherent and Direct‑Detection Test Rigs
In coherent and direct‑detection research setups, the module acts as a high‑speed detector for heterodyne/homodyne receivers, optical beat‑note detection, and linewidth or phase‑noise measurements. Its wide spectral range (1100–1650 nm) enables use with common telecom lasers and tunable sources in R&D laboratories.
Optical Modulator and Component Characterization
The 10 GHz bandwidth and flat gain response make the ROF‑PD module suitable for characterizing high‑speed LiNbO3 modulators, EAMs, integrated photonic modulators, and optical switches. It is commonly used with network analyzers or arbitrary waveform generators to measure frequency response, insertion loss, and chirp behavior of high‑speed components.
Optical Signal Integrity and Jitter Analysis
Used as a front‑end detector for eye‑diagram, jitter, and BER pre‑compliance measurements, the module converts high‑speed optical data into electrical waveforms compatible with oscilloscopes and BERTs. This makes it valuable in transceiver development, quality control, and production testing for 10G‑class optical modules (SFP+, XFP, XENPAK, etc.).
Microwave and Millimeter‑Wave Signal Generation via Optical Beating
When illuminated by two closely spaced lasers, the ROF‑PD module generates a beat frequency in the GHz range, acting as a source of low‑phase‑noise RF or microwave signals. This is used in photonic generation of microwave and millimeter‑wave carriers for radar, wireless backhaul, and precision timing applications.
Optical Fiber Gyroscopes and Interferometric Sensors
The combination of low PDL, good ORL (≤ −35 dB), and high sensitivity supports interferometric detection in fiber‑optic gyroscopes (FOG), hydrophones, and vibration or acoustic sensors. The module converts minute phase‑induced intensity variations into high‑fidelity electrical signals for inertial navigation and industrial sensing.
Laboratory Photonics Education and Research
Owing to its rugged module format, FC/PC or FC/APC fiber input, and SMA output, this detector is practical for university and research labs. It is used in teaching experiments on optical communication, ultrafast optics, RF photonics, and sensor systems where a reliable, ready‑to‑use 10 GHz photodetector is required.

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Frequently Asked Questions

What is the ROF-PD-10G high-speed photodetector light detection module and what are its key specifications?

The ROF-PD-10G is a 10 GHz high-speed photodetector / optical receiver module designed for fast optical pulse and high‑speed data detection in fiber optic links. It integrates a high‑performance 10 GHz PIN photodiode, a transimpedance / gain stage, and an SMA electrical output in a single compact module. Key specs include: 1100–1650 nm operating wavelength range, typical 10 GHz (–3 dB) electrical bandwidth, typical responsivity ~0.8 A/W at 1550 nm, typical gain ~40 V/W, rise time ~35 ps, dark current ~10 nA (25 °C), polarization dependent loss ≤0.6 dB, optical return loss ~–35 dB, electrical return loss S22 ~–10 dB (DC–10 GHz), 50 Ω output impedance, +12 V DC operating voltage, max input optical power 10 mW, operating temperature –10 to +60 °C, and FC/PC or FC/APC fiber input with SMA(f) RF output.

What are the typical applications of the ROF-PD-10G photodetector module in fiber optic and RF systems?

The ROF-PD-10G is used wherever a broadband, low‑noise optical-to-electrical converter is needed up to 10 GHz. Common applications, similar to other 10G photodetector modules on FindLight and from global vendors, include: 10 Gbit/s and below high‑speed optical communication receivers, radio‑over‑fiber (ROF) links for wireless fronthaul / backhaul, microwave photonics and analog optical links, high‑speed optical pulse and laser diagnostics, Brillouin and other distributed optical fiber sensing systems, coherent or direct‑detection lab test setups, and general R&D in photonics and RF where a calibrated optical detector with RF SMA output is required.

How do I connect and operate the ROF-PD-10G photodetector safely (fiber, RF, and power)?

To use the ROF-PD-10G: (1) Power: supply a stable +12 V DC to the module’s power input, respecting the specified polarity. Do not exceed the rated operating voltage of 12 V. (2) Optical input: connect your single‑mode or multimode fiber (as ordered: SM or MM) via the specified FC/PC or FC/APC connector. Ensure connector end faces are clean to avoid excess loss or damage. Keep optical input power below 10 mW to stay within safe operating limits. (3) Electrical output: connect the SMA(f) output to a 50 Ω RF load, oscilloscope, spectrum analyzer, or high‑speed digitizer using a quality 50 Ω coaxial cable. Proper 50 Ω termination is important to maintain bandwidth and avoid reflections. (4) Coupling mode: choose DC‑coupled or AC‑coupled version depending on whether you need to see the optical DC level (average power) or only the AC modulation. Allow the module to warm up for a short time for stable performance. As with similar 10 GHz detector modules from other manufacturers, avoid electrostatic discharge (ESD) and abrupt power cycling.

Should I choose DC coupling or AC coupling for the ROF-PD-10G, and what is the difference?

The ROF-PD-10G can be ordered in either DC‑coupled or AC‑coupled configuration (indicated in the ordering code as “DC” or “AC”). DC‑coupled output preserves both the DC and AC components of the photocurrent, allowing you to measure absolute optical power levels and very low‑frequency modulation. This is useful in optical power monitoring, slowly varying signals, and many sensing applications. The trade‑off is that baseline drift and low‑frequency noise will be present. AC‑coupled output uses an internal coupling capacitor so that only modulation above a certain cutoff frequency passes to the SMA output; the DC component (average optical power) is blocked. This is preferred for high‑speed data, RF, and microwave photonics where you want to remove offsets and focus on the RF modulation, similar to AC‑coupled 10G detectors from other vendors. Your choice should reflect whether DC level information is needed or just the AC / RF content.

What fiber and connector options are available for the ROF-PD-10G and how do they affect performance?

The ROF-PD-10G supports both single‑mode (SM) and multimode (MM) fiber input. In the ordering code, “SM” denotes single‑mode fiber coupling and “MM” denotes multimode fiber coupling. Single‑mode versions (typically optimized for 1310/1550 nm) are recommended for long‑haul, coherent, and high‑bit‑rate telecom or ROF links because they minimize modal dispersion and maintain high bandwidth. Multimode versions are useful for short‑reach links, lab setups, and systems using multimode sources. Connector options include FC/PC (coded as FP) and FC/APC (coded as FA). FC/APC connectors have an 8° angled polish that reduces back‑reflection, which is important in narrow‑linewidth laser, coherent, and sensing systems; FC/PC is suitable for many general‑purpose applications. Polarization dependent loss is kept low (≤0.6 dB), so performance is relatively insensitive to input polarization compared with many discrete photodiodes.

How does the 10 GHz bandwidth and 35 ps rise time of the ROF-PD-10G impact data rate and measurement capability?

With a –3 dB bandwidth of 10 GHz and a typical electrical rise time of about 35 ps, the ROF-PD-10G can accurately detect and reproduce optical signals with frequency components up to 10 GHz. This supports non‑return‑to‑zero (NRZ) data rates of about 10 Gbit/s, similar to other 10G receivers on the market, and is sufficient for many 2.5G, 5G, and 10G optical communication formats. For test and measurement, it allows you to observe sub‑100 ps optical pulses, RF-modulated optical carriers in the GHz range, and detailed eye diagrams on a high‑bandwidth oscilloscope. When paired with a scope or analyzer of equal or higher bandwidth, the detector will not be the limiting factor in most 10G‑class measurements.

What environmental and reliability limits should I consider for the ROF-PD-10G photodetector module?

The ROF-PD-10G is specified for operation from –10 °C to +60 °C with relative humidity from 5% to 90% (non‑condensing), and storage from –40 °C to +85 °C. These ratings are comparable to many lab and light industrial high‑speed detector modules from other manufacturers. To ensure long‑term reliability: keep input optical power at or below 10 mW, operate within the specified supply voltage of +12 V, avoid rapid thermal shocks or condensation, and protect the module from ESD. Use clean fiber connectors and follow standard optical handling procedures to prevent contamination or damage to the input interface. Within these conditions, the module is suitable for continuous operation in laboratory setups, communication testbeds, and fiber sensing systems.

Got more questions? Use the inquiry form to ask the supplier directly.