JY-PDT series
一、Product Appearance
Reference image of the appearance of JY-PDT series high-speed bias voltage silicon photodetector equipment
二、Product Overview
The JY-PDT series high-speed bias voltage silicon photodetectors are high-performance optical detection products independently developed by Guangzhou Jingyi Optoelectronic Technology Co., Ltd. These detectors utilize high-quality silicon materials as the photosensitive components, with a light sensing range spanning from 400nm to 1100nm, encompassing the visible to near-infrared wavelength bands. They are widely used in high-speed laser pulse measurements, fiber optic communication system testing, scientific research experiments, and other fields.
This series of products adopts a bias voltage design, featuring extremely low noise and fast response. They can achieve high-precision optoelectronic signal conversion without the need for additional gain. The products offer a variety of coupling options, supporting interfaces such as window plates, spherical lenses, FC/PC fiber optic holders, SMA, and more, providing flexibility for adapting to different application scenarios.
三、Technical Parameters
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Technical indicators
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Parameter values
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Models
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JY-PDT250A / JY-PDT250AL / JY-PDT250AFC / JY-PDT250ASMA
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Photosensitive range
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400~1100nm，peak wavelength 730nm
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Peak responsivity
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0.46 A/W
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Photosensitive size
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Φ250μm
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3dB bandwidth (@50Ω) JY-PDT250 series
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JY-PDT250 series：2GHz
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Rise/fall time JY-PDT250 series
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JY-PDT250 series：150ps
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NEP
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9.29×10⁻¹⁵ W/Hz¹/²
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Dark current
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35pA
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Maximum output voltage
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2V
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Capacitance
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1.73pF
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Bias voltage
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12V
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Operating impedance
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50Ω
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Overall dimensions
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49.8mm × 35.6mm × 20.3mm
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Net weight
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0.18 kg
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Operating temperature
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0~40℃
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Power supply battery
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A23, 12VDC, 40mAh
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Signal interface
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SMA（DC coupling）
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Installation interface
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M4×1
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Characteristics of photosensitive surfaces of various models
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Model
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Input coupling method
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Photosensitive surface characteristics
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JY-PDT250A
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window pane
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planar antireflection coating
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JY-PDT250AL
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ball lens
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ball lens Φ1.50mm
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JY-PDT250AFC
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FC/PC fiber optic socket
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Embedded coupling lens Φ1.50mm
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JY-PDT250ASMA
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SMA
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Embedded coupling lens Φ1.50mm
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四、Technical Features
4.1 Wide spectral response
The photosensitive range spans from 400nm to 1100nm, with a peak response wavelength of 730nm, perfectly fitting the optoelectronic measurement needs of visible and near-infrared wavelengths. The spectral response curve is flat, and the peak responsivity reaches 0.46 A/W.
4.2 High speed and low noise
• JY-PDT250 series: With a rise time of only 150ps, a 3dB bandwidth of up to 2GHz, and a NEP as low as 9.29×10⁻¹⁵ W/Hz¹/², it is suitable for ultrafast optical pulse measurements
4.3 Flexible coupling method
Four input coupling methods are provided to meet the docking requirements of different optical systems：
• Window type: suitable for direct incidence of free-space light, with a planar anti-reflective coating to reduce reflection loss
• Spherical lens type: Integrated spherical lens coupling to enhance light collection efficiency
• FC/PC fiber optic connector type: standard fiber optic interface, suitable for fiber optic transmission systems
• SMA type: RF standard interface, suitable for high-frequency signal transmission scenarios
4.4 Plug-and-play design
• Built-in 12V bias power supply (powered by A23 battery), no external bias voltage required
• SMA signal output interface, with a standard impedance of 50Ω, allowing direct connection to an oscilloscope
• M4 rod interface, facilitating the installation and fixation of the optical platform
4.5 High reliability guarantee
• Operating temperature range: 0~40℃, suitable for conventional laboratory environment
• All-metal casing, effectively shielding electromagnetic interference
• Low dark current design (as low as 35pA) ensures measurement accuracy
• Compatible with interfaces of international mainstream brands (same model as Thorlabs, seamless compatibility)
五、Product structure design
5.1 Detector body
• Dimensions：49.8mm × 35.6mm × 20.3mm
• Net weight：0.18kg
• Full metal shell design, effectively shielding electromagnetic interference
5.2 Product configuration
六、Typical application scenarios
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Application field
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Practical Application
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Scientific research experiment
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Ultrafast laser pulse measurement, femtosecond/picosecond laser performance characterization, and nonlinear optical experimental optical signal detection
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Optical fiber communication
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Bit error rate testing of optical fiber communication systems, output power monitoring of optical transmitters, loss measurement of optical fiber links, and eye diagram analysis of optical signals
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Industrial inspection
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Laser processing process monitoring, photoelectric sensor calibration, industrial automation optical signal detection, LED/LD device performance testing
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Biomedical
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Laser medical equipment optical power monitoring, optical coherence tomography (OCT), flow cytometer optical signal detection, and biofluorescence detection system
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七、After-sales Service
• Hardware warranty: 12 months (excluding any damage caused by human factors)
• Response time: 7x24-hour remote support, on-site response within 48 hours
• Quality assurance: ISO9001 certification system, with full traceability
• Technical support: Provide a professional technical team to promptly answer and guide questions related to equipment usage
• Spare parts supply: Adequate inventory of commonly used spare parts to ensure rapid replacement
• Training services: Based on customer needs, we can provide operation and maintenance training
• Regular follow-ups: Conduct customer follow-ups quarterly to collect feedback and continuously optimize the service experience
