C-Band, L-Band PIN Photodetector with Low Distortion are high-performance InGaAs photodetectors designed for analog fiber-optic CATV return path applications. Featuring high responsivity, low intermodulation distortion, and low optical back reflection, these modules ensure reliable signal detection and transmission quality. With hermetically sealed packaging, flexible fiber and connector options, and a wide operating temperature range of −40°C to +85°C, they provide efficient optical detection solutions for CATV receivers and multi-channel fiber-optic communication systems.
| Name | Model | Description | Price |
|---|
● High Responsivity
● Low Distortion
● Low Back Reflection
● High-Speed Performance
● Flexible Packaging
Test conditions: Temperature = 25°C, VR = 5 V unless noted. All specifications without connector.
Parameters | Conditions | EPM 705 | |
Responsivity | λ = 1310 nm λ = 1550 nm | Minimum | 0.80 A/W 0.85 A/W |
Distortion product IM2 | Maximum | -70 dBc1 | |
Back reflection | Maximum | −40 dB | |
Dark current | Maximum | 5.0 nA | |
Capacitance3 | Maximum | 0.75 pF | |
Bandwidth4 | Typical | 2.0 GHz | |
Single mode fiber 900 µm 8.7/125 µm core/cladding | Minimum Maximum | 1.0 m 1.5 m |
1. IM2 measured at VR = 12 V, Pavg = 0 dBm, MI = 0.7, Rload = 50 Ω, f1 + f2 = 324.25 MHz, f1 - f2 = 54.25MHz.
2. IM2 measured at VR = 12 V, Pavg = 0 dBm, MI = 0.7, Rload = 50 Ω , f1 + f2 = 850.25 MHz, f1 - f2 = 50.25 MHz.
3. Measured with case grounded.
4. -3 dB point into a 50 Ω load.
Parameters | Specification | |
Forward current1 | Minimum | 10 mA |
Reverse current2 | Minimum | 10 mA |
Reverse voltage | Minimum | 25 V |
Power dissipation | Minimum | 100 mW |
Operating case temperature | Minimum~Maximum | -40°C~85°C |
Soldering temperature | Minimum | 260°C |
Storage temperature λ = 1625 nm | Minimum~Maximum | -40°C~85°C |
Note:
1. Under forward bias, current at which device may be damaged.
2. Under reverse bias, current at which device may be damaged.
Dark Current vs. Reverse Bias

Capacitance vs. Reverse Bias 23°C

Typical Spectral Response 23°C

Specifications in mm unless otherwise noted.

● CATV Return Path Systems
● AM Fiber-Optic CATV Receivers
● Multi-Channel Optical Transmission
● Broadband Cable Networks
● Optical Receiver Modules
