特長
● Low insertion loss
● Low Driving Voltage
● Low backlight reflection
● Small package size and light weight
● Good long-term stability
仕様
Intensity Modulator Specifications
Item # | LIM-1550-A-PA | LIM-1550-B-PA | LIM-1550-C-PA | LIM-1550-D-PA |
Operating Wavelengtha | 1525 nm- 1605 nm | 1525 nm - 1605 nm | 1525 nm - 1605 nm | 1525 nm - 1605 nm |
Optical Insertion Loss | ≤5.0 dB (4.0 dB Typ.) | ≤5.0 dB (4.0dB Typ.) | ≤5.0 dB ( 4.0dB Typ.) | ≤5.0 dB (4.0 dB Typ.) |
Optical Return Loss | ≥40 dB | ≥40 dB | ≥40 dB | ≥55dB |
Optical Extinction Ratio
(@ DC) | ≥20 dB | ≥20 dB | ≥20 dB | ≥20 dB |
Optical Input Power | ≤100 mW | ≤100 mW | ≤100 mW | ≤100 mW |
E/O Bandwidth (-3 dB) | ≥2.5GHz (3 GHz Typ.) | ≥10 GHz (14 GHz Typ.) | ≥20 GHz (21 GHz Typ.) | ≥40GHz (42GHz Typ.) |
Operating Frequency Range | 10MHZ to 2.5GHz (Min) | 10MHZ to 10 GHz (Min) | 10MHZ to 20GHz (Min) | 10MHZ to 40GHz (Min) |
RF Vπ (@ 1 GHz) | ≤5V (3.5V Typ.) | ≤6.5 V (5.6 V Typ.) | ≤6.5 V (5.2 V Typ.) | ≤5V (3.5V Typ.) |
RF Vπ (@ 20 GHz) | - | - | - | - |
DC Bias Vπ (@ 1 kHz) | ≤10.0 V (6.5 V Typ.) | ≤10.0 V (6.5 V Typ.) | ≤3.0 V (2.7 V Typ.)b | ≤10.0 V (6.5 V Typ.) |
S11 | 10MHZ to 2.5 GHz | 10MHZ to 10 GHz | 10MHZ to 20 GHz | 10MHZ to 40 GHz |
RF Input Power |
|
Reverse Bias Voltage | -5.5 V to -3.0 V |
Responsivity | 0.1 mA/mW to 0.5 mA/mW |
Output Optical Power
Monitoring Range | -5 dBm to 10 dBm |
RF Connection | Male SMP (GPO®† Compatible), Full Detent |
Fiber Type | Input: PANDA Polarization Maintaining
Output: SMF-28®‡ Single Mode |
Fiber Lead Length | 1.5 m Typ. |
Environmental |
|
Operating Case Temperature | 0 °C - 70 °C |
Storage Temperature | -40 °C - 85 °C |
These modulators are designed for use at the specified wavelengths. Using the modulator at other wavelengths may cause an increase in the optical loss that is not covered under warranty. In some cases, this loss can be temporary; for instance, the increase in loss caused by shorter wavelengths can usually be reversed by heating the modulator to 80 °C for an hour.
The LIM-1550-B-PA includes a bias circuit that couples the DC bias onto the RF drive electrode. Depending on the application, an external DC block may be needed at the RF input.
What is the Pockel's Effect?
Both our phase and our amplitude modulators are based upon the Pockel's effect: the electro-optic effect where the refractive index along one or more axes is proportional to an externally applied electric field. Therefore, by applying a voltage across the electrodes of an electro-optic crystal, you can change the phase of light as it passes through the crystal. By placing the crystal between crossed polarizers, this phase modulation can be converted into amplitude modulation.
Maximum Ratings for LiNbO3 Modulators |
Optical Input Power | 100 mW |
Input RF Power | 27dBm |
Operating Temperature Range | 0 °C - 70 °C |
Storage Temperature Range | -40 °C - 85 °C |
寸法
PIN Diagrams
2.5Ghz LiNbO3 MZ Modulator
10Ghz LiNbO3 MZ Modulator
20Ghz LiNbO3 MZ Modulator
40Ghz LiNbO3 MZ Modulator
S21 Test Graph
応用 / 用途
● RF-Over-Fiber (RFOF) and Microwave Photonics
● High-Speed Telecommunications
● WDM Transmission
注文情報
LIM-□□□□-☆-XX（ LIM stands for LiNbO3 Intensity modulator）
□□□□：Wavelength
1310: 1310nm
1550: 1550nm
☆ ：Modulation Bandwidth
A: ＞2.5GHZ
B: ＞10GHZ
C: ＞20GHZ
D: ＞40GHZ
XX: Fiber and Connector Type
SA=SMF-28E+ FC/APC
SP=SMF-28E+ FC/PC
PP=PM Fiber+ FC/PC
PA=PM Fiber+ FC/APC
