FOG / MIOC
DBY011550M
Operating Wavelength
1310±25 nm
Insertion Loss
≤3.0 dB
Maximum Optical Input Power
200 mW
Split Ratio
48/52~52/48
Categories
MIOC
Navigation / FOG / MIOC
4 products in catalog
MIOC (Multifunction Integrated Optical Chip)
A multifunction integrated optical chip (MIOC) is a lithium niobate (LiNbO3) integrated-optics device that combines the polarizer, Y-junction splitter, and phase modulator of a fiber optic gyroscope (FOG) in a single chip. It sits between the broadband light source and the fiber sensing coil and is the core optical component of closed-loop FOG architectures.
The MIOC determines key gyroscope characteristics including optical throughput, bias stability contribution, and modulation bandwidth. Catalog models cover 1310 nm and 1550 nm operating wavelengths with published insertion loss, half-wave voltage, split ratio, and polarization crosstalk specifications. Device selection is driven by the target wavelength of the gyroscope's light source, the required modulation frequency, and the allowable optical loss budget.
Catalog MIOC variants for fiber optic gyroscope assemblies. Full parameter sets, package drawings, and pin definitions are published per model; measurement conditions and configuration details are confirmed during the inquiry process.
Key Selection Parameters
Operating Wavelength
Must match the broadband light source of the gyroscope — 1310 nm or 1550 nm variants. The 1550 nm band is common in navigation-grade FOG designs.
Insertion Loss
Directly consumes the optical power budget. Lower insertion loss leaves more margin for coil length and detection electronics.
Half-Wave Voltage
Sets the drive voltage requirement of the phase modulator. Lower half-wave voltage eases the design of the modulation electronics.
Split Ratio
Y-junction splitting symmetry; deviations contribute to gyroscope bias error. Typical catalog values are near 50/50.
Polarization Crosstalk
Integrated polarizer performance. Lower crosstalk reduces non-reciprocal error in the gyroscope.
Model Comparison
| Parameter | DBY011550M | DBY021550M | DBY031550H | DBY041550L |
|---|---|---|---|---|
| Operating Wavelength | 1310±25 nm | 830±20 nm | 1550±25 nm | 1550±25 nm |
| Insertion Loss | ≤3.0 dB | ≤3.5 dB | ≤4.0 dB | ≤3.0 dB |
| Half-Wave Voltage | ≤3.5 V | ≤3.0 V | ≤3.5 V | ≤3.0 V |
| Split Ratio | 48/52~52/48 | 48/52~52/48 | 48/52~52/48 | 48/52~52/48 |
| Polarization Crosstalk | ≤-30 dB | ≤-30 dB | ≤-30 dB | ≤-30 dB |
| Operating Frequency | 0-300 MHz | DC-300 MHz | DC-200 MHz | DC-200 MHz |
- Operating Wavelength
- 1310±25 nm
- Insertion Loss
- ≤3.0 dB
- Half-Wave Voltage
- ≤3.5 V
- Split Ratio
- 48/52~52/48
- Polarization Crosstalk
- ≤-30 dB
- Operating Frequency
- 0-300 MHz
- Operating Wavelength
- 830±20 nm
- Insertion Loss
- ≤3.5 dB
- Half-Wave Voltage
- ≤3.0 V
- Split Ratio
- 48/52~52/48
- Polarization Crosstalk
- ≤-30 dB
- Operating Frequency
- DC-300 MHz
- Operating Wavelength
- 1550±25 nm
- Insertion Loss
- ≤4.0 dB
- Half-Wave Voltage
- ≤3.5 V
- Split Ratio
- 48/52~52/48
- Polarization Crosstalk
- ≤-30 dB
- Operating Frequency
- DC-200 MHz
- Operating Wavelength
- 1550±25 nm
- Insertion Loss
- ≤3.0 dB
- Half-Wave Voltage
- ≤3.0 V
- Split Ratio
- 48/52~52/48
- Polarization Crosstalk
- ≤-30 dB
- Operating Frequency
- DC-200 MHz
Selection Workflow
- 01
Fix the wavelength
Match the MIOC operating wavelength to the gyroscope's broadband light source (1310 nm or 1550 nm).
- 02
Budget the loss
Sum insertion loss against the source power and coil loss to confirm adequate signal at the detector.
- 03
Check the modulator drive
Confirm the half-wave voltage is compatible with the intended modulation electronics.
- 04
Inquire with target specs
Send wavelength, loss budget, and modulation requirements — configuration and availability are confirmed per project.
Typical Applications
- Closed-loop fiber optic gyroscopes (FOG)
- Fiber optic inertial measurement units
- Gyroscope-based north finding and azimuth alignment
- Stabilization and attitude reference assemblies
Testing Considerations
- lab_profileVerify insertion loss and split ratio at the actual operating wavelength and temperature range of the application.
- lab_profileConfirm pigtail polarization crosstalk with the fiber type used in the sensing coil.
- lab_profileRequest measurement conditions for half-wave voltage (frequency, waveform) when comparing across models.
FOG / MIOC
DBY021550M
Operating Wavelength
830±20 nm
Insertion Loss
≤3.5 dB
Maximum Optical Input Power
10 mW
Split Ratio
48/52~52/48
FOG / MIOC
DBY031550H
Operating Wavelength
1550±25 nm
Insertion Loss
≤4.0 dB
Maximum Optical Input Power
200 mW
Split Ratio
48/52~52/48
FOG / MIOC
DBY041550L
Operating Wavelength
1550±25 nm
Insertion Loss
≤3.0 dB
Maximum Optical Input Power
200 mW
Split Ratio
48/52~52/48
Related Resources
Specify This Category
Share your target specifications and environmental conditions. Pricing, availability, and configuration are confirmed per project through direct inquiry.