JY-PDT series
1、 Product appearance
JY-PDT series high-speed bias silicon photodetector equipment appearance reference picture
二、Product Overview
The JY-PDT series high-speed bias silicon photodetector is a high-performance photodetector product independently developed by Guangzhou Jingyi Optoelectronics Technology Co., Ltd. This series of detectors uses high-quality silicon material as the photosensitive element, with a photosensitive range covering 400nm~1100nm, covering visible light to near-infrared bands. It is widely used in high-speed laser pulse measurement, fiber optic communication system testing, scientific research experiments and other fields.
This series of products adopts a bias type design, which has the characteristics of extremely low noise and fast response, and can achieve high-precision photoelectric signal conversion without additional gain. The product offers multiple coupling methods to choose from, supporting window panels, ball lensesFC/PC fiber optic socket, SMA and other interfaces, flexibly adapting to different application scenarios.
三、Technical Parameters
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technical indicators
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parameter value
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model
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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 (@ 50 Ω)
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JY-PDT250 series: 2GHz
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rise/Descent time
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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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Junction capacitance
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1.73pF
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Bias voltage
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12V
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Working 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 Coupled)
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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 panel
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Flat anti reflective film
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JY-PDT250AL
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Ball lens
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Ball lens with a diameter of 1.50mm
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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
Photosensitive range coverage400nm~1100nm， The peak response wavelength is 730nm, perfectly adapting to the optoelectronic measurement needs of visible light and near-infrared bands. The spectral response curve is flat, with a peak responsivity of 0.46 A/W.
4.2 High speed and low noise
• JY-PDT250 series: Rise time of only 150ps, 3dB bandwidth up to 2GHz, NEP as low as 9.29 × 10 ⁻¹⁵ W/Hz ¹/², suitable for ultrafast optical pulse measurement
4.3 Flexible coupling method
Active coupling method
Provide four input coupling methods to meet the docking requirements of different optical systems:
• Window type: suitable for direct incidence of free space light, with a flat anti reflection film to reduce reflection loss
• Ball lens type: Integrated ball lens coupling to improve light collection efficiency
• FC/PC fiber optic socket 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 is required
• SMA signal output interface, 50 Ω standard impedance, directly connected to oscilloscope
• M4 support rod interface for easy installation and fixation of optical platforms
4.5 High reliability guarantee
• Working temperature range: 0~40 ℃, suitable for conventional laboratory environment
• All metal casing effectively shields electromagnetic interference
• Low dark current design (minimum 35pA) to ensure measurement accuracy
• Compatible with international mainstream brand interfaces (same as Sorebo THORLABS, seamless compatibility)
五、Product Structure Design
5.1 Detector body
• Appearance dimensions: 49.8mm × 35.6mm × 20.3mm
• Net weight: 0.18kg
• All metal shell design effectively shields electromagnetic interference
5.2 Product Configuration
六、Typical application scenarios
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Application Fields
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Specific Applications
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Scientific research experiments
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Ultrafast laser pulse measurement, femtosecond/Performance characterization of picosecond laser and detection of optical signals in nonlinear optical experiments
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optical fiber communication
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Error rate testing of fiber optic communication systems, monitoring of output power of optical transmitters, measurement of fiber optic link losses, and analysis of optical signal eye diagrams
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industrial inspection
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Laser processing process monitoring, photoelectric sensor calibration, industrial automation optical signal detectionPerformance testing of LED/LD devices
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Biomedical
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Laser medical equipment optical power monitoring, optical coherence tomography(OCT)、 Flow cytometry optical signal detection and biological fluorescence detection system
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七、After-sales service
• Hardware Warranty：12 months (non-human damage)
• Response Time：seven
• quality assurance：ISO9001 certification system, fully traceable throughout the process
• Technical SupportProvide a professional technical team to provide timely answers and guidance on equipment usage issues
• spare parts supplyAdequate inventory of commonly used spare parts to ensure quick replacement
• Training ServicesAccording to customer needs, operation and maintenance training can be provided
• Regular follow-up visitsConduct customer visits once a quarter to collect feedback and continuously optimize the service experience
