The BPD25 is "push-pull" InGaAs photodiodes with each photodiode capable of handling high optical power up to +14 dBm. High Common Mode Rejection Ratio (CMRR) and low Polarization Dependent Loss (PDL) make these devices ideal for both digital and analog applications. The broad wavelength response of these photodiodes allows for multiple wavelength usage.
Product model
| Balanced InGaAs Photodiodes to 25 GHz |
BPD-25G-A | Response wavelngth 1100-1565nm, Bandwidth 25G, Material InGaAs, Detector response 0.7A/W@1550nm | Response wavelength: 1100-1565nm Bandwidth: 25GHz |
Parameter
Features
● Lowest PDL (typical 0.05 dB)
● Normalized CMRR exceeds 30 dB
● Useable spectral wavelength range of 800-1650 nm
● Improves sensitivity by canceling DC portion of RIN and ASE noise
● High optical power handling InGaAs PIN photodiodes
● Small form-factor fiber-pigtailed package
● Improved reliability for high optical power handling
● One device for multiple wavelengths reduces operational and inventory cost
● OIP3 exceeding + 40dBm for highly linear option
Specifications
Product Specifications (Unless otherwise specified, all tests are conducted at 25°C)
Parameter | Symbol | Test Condition | Min | Typ | Max | Unit |
Operating Temperature | T0 |
| 0 |
| 75 | ℃ |
Storage Temperature | Ts |
| -40 |
| 85 | ℃ |
Operating Wavelength | λ |
|
| 1550 |
| nm |
Bias Voltage | Vb |
| 3 | 5 |
| V |
Photosensitive Diameter | Ф |
|
| 20 |
| μm |
Saturation Optical Power | Ps | λ = 1550 nm, Vb = 5 V | 9 | 10 |
| dBm |
Responsivity | R | λ = 1550 nm, Vb = 5 V |
| 0.7 |
| A/W |
Responsivity Imbalance | Imb |
|
| 1.50% |
|
|
Dark Current | Id | Vb = 5 V |
| 5 | 10 | nA |
3 dB Bandwidth | BW | Ps,o = 0 dBm, Vb = 5 V | 25 | 26 |
| GHz |
Common Mode Rejection Ratio | CMRR | Ps,o = 0 dBm, Vb = 5 V | 18 | 20 |
| dB |
Maximum Absolute Ratings
Parameter | Symbol | Rating | Unit |
Optical Power | Ps | 13 | dBm |
Forward Voltage | Vr | 10 | V |
Operating Temperature | Top | -40 ~ +70 | °C |
Storage Temperature | Tstg | -40 ~ +85 | °C |
Soldering Temperature | Tp | 260 (10s) | °C |
Minimum Fiber Bending Radius | Rfiber | 20 | mm |
Dimension

Custom sizes and pins are available upon request, with the minimum size being 16*16*8mm (with pigtails, pins, and mounting details ).
Application
● DPSK/DQPSK: Differential Phase/Polarization Shift Keying or Differential Quadrature Phase Shift Keying
● High Dynamic Range, Analog RF Links over Fiber
● Rapid Doppler-shift LIDAR measurements
● Coherent Lightwave Systems
● Brillouin Scattering - OTDR
● Test and Measurement
Product model
BPD-25G-AResponse wavelength: 1100-1565nm
Bandwidth: 25GHz
Parameter
● Lowest PDL (typical 0.05 dB)
● Normalized CMRR exceeds 30 dB
● Useable spectral wavelength range of 800-1650 nm
● Improves sensitivity by canceling DC portion of RIN and ASE noise
● High optical power handling InGaAs PIN photodiodes
● Small form-factor fiber-pigtailed package
● Improved reliability for high optical power handling
● One device for multiple wavelengths reduces operational and inventory cost
● OIP3 exceeding + 40dBm for highly linear option
Product Specifications (Unless otherwise specified, all tests are conducted at 25°C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Operating Temperature
T0
0
75
℃
Storage Temperature
Ts
-40
85
℃
Operating Wavelength
λ
1550
nm
Bias Voltage
Vb
3
5
V
Photosensitive Diameter
Ф
20
μm
Saturation Optical Power
Ps
λ = 1550 nm, Vb = 5 V
9
10
dBm
Responsivity
R
λ = 1550 nm, Vb = 5 V
0.7
A/W
Responsivity Imbalance
Imb
1.50%
Dark Current
Id
Vb = 5 V
5
10
nA
3 dB Bandwidth
BW
Ps,o = 0 dBm, Vb = 5 V
25
26
GHz
Common Mode Rejection Ratio
CMRR
Ps,o = 0 dBm, Vb = 5 V
18
20
dB
Maximum Absolute Ratings
Parameter
Symbol
Rating
Unit
Optical Power
Ps
13
dBm
Forward Voltage
Vr
10
V
Operating Temperature
Top
-40 ~ +70
°C
Storage Temperature
Tstg
-40 ~ +85
°C
Soldering Temperature
Tp
260 (10s)
°C
Minimum Fiber Bending Radius
Rfiber
20
mm
Custom sizes and pins are available upon request, with the minimum size being 16*16*8mm (with pigtails, pins, and mounting details ).
● DPSK/DQPSK: Differential Phase/Polarization Shift Keying or Differential Quadrature Phase Shift Keying
● High Dynamic Range, Analog RF Links over Fiber
● Rapid Doppler-shift LIDAR measurements
● Coherent Lightwave Systems
● Brillouin Scattering - OTDR
● Test and Measurement