1300nm Intensity Modulator（IM13 Series）
1、Product introduction
The intensity modulator based on Mach-Zehnder interference structure can realize the intensity change of interference light wave by modulating the phase of light wave. IM13 series intensity modulator adopts annealing proton exchange process to fabricate low-loss optical waveguide with single polarization (polarization) characteristics on LiNbO₃ wafer, so it has excellent polarization stability and can maintain the stability of optical index of the device under the condition of high input optical power.
Low-speed intensity modulator adopts high impedance lumped modulation electrode structure, which is suitable for low modulation rate (such as DC~500MHz) application scenarios. The high-speed intensity modulator adopts coplanar traveling wave modulation electrode structure with 50Ω impedance, which is suitable for high modulation rate (such as 1~10GHz).
IM13 series intensity modulators have the remarkable characteristics of low driving voltage, high stability and miniaturization, and can be applied to optical fiber sensing, fiber communication, microwave fiber link, laser coherent synthesis and other fields.
2、Product series and typical Parameter
（1）IM1300 series 【 low-speed intensity modulator 】
|
Type |
Parameter |
Typical value |
Unit |
|
Optical index |
Crystal tangential direction |
X-cut y-transfer LiNbO₃ |
－ |
|
Waveguide technology |
Proton exchange (single polarization) |
－ |
|
|
operating wavelength |
1300 nm ± 20 |
nm |
|
|
Insertion loss |
5.0 |
dB |
|
|
Polarization extinction ratio of tail fiber |
20 |
dB |
|
|
Switching extinction ratio |
20 |
dB |
|
|
Optical return loss |
-45 |
dB |
|
|
Electrical index |
RF half-wave voltage |
3.5 |
V |
|
Bias half-wave voltage |
5.0 |
V |
|
|
RF operating bandwidth（S21） |
DC~500M |
Hz |
|
|
RF electric reflection（S11） |
－ |
dB |
|
|
RF port impedance |
~1M |
Ω |
|
|
Bias port impedance |
~1M |
Ω |
|
|
RF/Bias electrical port |
SMA |
－ |
|
|
Packaging structure |
Input fiber |
Single mode fiber or PM1300XP polarization maintaining fiber. Fiber length ≥ 1m, 900μm loose tube, FC/APC connector. |
－ |
|
Output fiber |
Single mode fiber or PM1300XP polarization maintaining fiber. Fiber length ≥ 1m, 900μm loose tube, FC/APC connector. |
－ |
|
|
Package casing |
IM03 |
－ |
（2）IM13 Series [High Speed Intensity Modulator]
|
Type |
Parameter |
Typical value |
Unit |
||
|
Optical index |
Crystal tangential direction |
X-cut y-transfer LiNbO₃ |
－ |
||
|
Waveguide technology |
Proton exchange (single polarization) |
－ |
|||
|
operating wavelength |
1300 nm ± 20 |
nm |
|||
|
Insertion loss |
5.0 |
dB |
|||
|
Polarization extinction ratio of tail fiber |
20 |
dB |
|||
|
Switching extinction ratio |
20 |
dB |
|||
|
Optical return loss |
-45 |
dB |
|||
|
Electrical index |
RF operating bandwidth（S21） |
1.0 |
5.0 |
10.0 |
GHz |
|
RF half-wave voltage |
4.5 |
5.0 |
5.5 |
V |
|
|
Bias half-wave voltage |
6.0 |
V |
|||
|
RF electric reflection（S11） |
≤ -10 |
dB |
|||
|
RF port impedance |
50 |
Ω |
|||
|
Bias port impedance |
~1M |
Ω |
|||
|
RF/Bias electrical port |
SMA |
－ |
|||
|
Packaging structure |
Input fiber |
Single mode fiber or PM1300XP polarization maintaining fiber. Fiber length ≥ 1m, 900μm loose tube, FC/APC connector. |
－ |
||
|
Output fiber |
Single mode fiber or PM1300XP polarization maintaining fiber. Fiber length ≥ 1m, 900μm loose tube, FC/APC connector. |
－ |
|||
|
Package casing |
IM03 |
－ |
|||
（3）Extreme operating conditions
|
Parameter |
Typical value |
Unit |
|
Input optical power |
≤ 100 |
mW |
|
Maximum RF power |
≤ 20 |
dBm |
|
operating temperature |
0 ~ +70 |
℃ |
|
storage temperature |
-40 ~ +85 |
℃ |
|
fiber bending radius |
≥ 50 |
mm |
3、Dimension drawing of package tube
（1）IM03 type
