Lithium niobate electro-optic polarization modulator / Polarization scrambler
Titanium diffusion forms a straight optical waveguide in X-cut, Y-propagating lithium niobate that carries both TE and TM modes. The input is coupled at 45° to the slow axis of polarization-maintaining fiber. Linearly polarized light traveling along that slow axis splits into TE and TM waveguide modes. Applied voltage controls their phase difference; coupling into output PM fiber aligned at 45° produces orthogonal linear or circular polarization for polarization modulation or conversion. In a similar configuration, the input is coupled at 45° to the PM-fiber slow axis and the output uses single-mode fiber. Applied voltage again controls the TE/TM phase difference to produce different output polarization states.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Crystal cut | typical:X-cut, Y-propagating lithium niobate |
| Waveguide fabrication process | typical:titanium indiffusion (dual polarization) |
| Operating Wavelength | typical:1550 ± 20 nm |
| Insertion Loss | typical:≤ 3.5 dB |
| Pigtail polarization extinction ratio | typical:≥ 20 dB |
| Optical return loss | typical:- 45 |
| Operating frequency | typical:DC~100M or more |
| TE-TM mode conversion voltage | typical:~ 6.0 V |
| RF Impedance | typical:1M |
| RF Interface | typical: SMA |
| Input Optical fiber | typical: PM1550XP Polarization-maintaining Optical fiber |
| Output Fiber | typical:PM1550XP polarization-maintaining fiber, or single-mode fiber |
| Package housing | typical:K5509 type, PM01 type |
| Input Optical power [Limiting operating conditions] | typical:≤ 50 mW |
| Maximum applied voltage [Limiting operating conditions] | typical:±15 V |
| Operating Temperature [Limiting operating conditions] | typical:0 ~ +70 ℃ |
| Storage Temperature [Limiting operating conditions] | typical:-40 ~ +85 ℃ |
| Fiber bend radius [Limiting operating conditions] | typical:≥ 50 mm |
Datasheet
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