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MIOC

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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

Published specifications per catalog model. Full parameter sets on each product page.

ParameterDBY011550MDBY021550MDBY031550HDBY041550L
Operating Wavelength1310±25 nm830±20 nm1550±25 nm1550±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 Ratio48/52~52/4848/52~52/4848/52~52/4848/52~52/48
Polarization Crosstalk≤-30 dB≤-30 dB≤-30 dB≤-30 dB
Operating Frequency0-300 MHzDC-300 MHzDC-200 MHzDC-200 MHz

Compare published specifications. Scroll horizontally to explore models.

Selection Workflow

  1. 01

    Fix the wavelength

    Match the MIOC operating wavelength to the gyroscope's broadband light source (1310 nm or 1550 nm).

  2. 02

    Budget the loss

    Sum insertion loss against the source power and coil loss to confirm adequate signal at the detector.

  3. 03

    Check the modulator drive

    Confirm the half-wave voltage is compatible with the intended modulation electronics.

  4. 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

  • Verify insertion loss and split ratio at the actual operating wavelength and temperature range of the application.
  • Confirm pigtail polarization crosstalk with the fiber type used in the sensing coil.
  • Request measurement conditions for half-wave voltage (frequency, waveform) when comparing across models.

4 products · Published specifications

Related Resources

FOG Components Family Fiber Optic Coils Broadband Light Sources

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Share your target specifications and environmental conditions. Pricing, availability, and configuration are confirmed per project through direct inquiry.

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