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3-inch SGGG Wafer, Substituted Gadolinium Gallium Garnet, (111) Orientation, EPI Polished, Faraday Rotator Substrate for 400G/800G Optical Module Isolators
3-inch SGGG Wafer, Substituted Gadolinium Gallium Garnet, (111) Orientation, EPI Polished, Faraday Rotator Substrate for 400G/800G Optical Module Isolators
Specifications
Diameter Tolerance :
76.20 ± 0.3 mm
Model Number :
SCR-2026-08-26-02
Orientation :
(111) ± 0.1°
Lattice Constant :
12.497 ± 0.003 Å
Nominal Siz :
3 inch (Φ76.2 mm)
Flatness (Max-Min) :
≤ 6 μm（ 80% central effective area）
Place of Origin :
China
Primary Flat :
[-110] ± 2°
Brand Name :
Crystro
Material :
Substituted Gd₃Ga₅O₁₂
Payment Terms :
T/T, Western Union,MoneyGram
Secondary Flat :
[-1-12] ± 2°
Description
3-inch SGGG Wafer, Substituted Gadolinium Gallium Garnet, (111) Orientation, EPI Polished, Faraday Rotator Substrate for 400G/800G Optical Module Isolators
The 3-inch SGGG epitaxial substrate is the mainstream specification for Faraday rotator mass production in the optical communications industry. With a diameter of 76.2 mm, standard thickness of 630 ± 30 μm, and (111) orientation, it uses in-house grown large-size SGGG single crystal. Precision-processed and EPI-grade super-smooth polished, it achieves Ra ≤ 1 nm, dislocation density ≤ 10 cm⁻², and TTV ≤ 6 μm, ready for batch LPE growth of BIG/Bi:YIG magneto-optical films.
The product features a primary flat ([-110]) and secondary flat ([-1-12]) for precise alignment in epitaxy equipment and subsequent dicing processes. Each batch undergoes full-parameter inspection including lattice constant, orientation, surface particle count, and bow, ensuring high consistency. It is the cost-effective choice for mass production of Faraday rotators for 400G/800G optical module isolators and circulators.
Key Functions
BIG/YIG film LPE epitaxy:
Precisely matched lattice constant with bismuth iron garnet films, ensures epitaxial layer uniformity and magneto-optical performance
Faraday rotator mass-production substrate:
3-inch is the current mainstream size for optical communication rotator production, yielding tens to hundreds of rotator chips per wafer
Core upstream of isolators/circulators:
The rotator chip is the "heart" of optical isolators; SGGG substrate is its foundation
Typical Applications
400G/800G optical module isolators
Faraday rotator chip mass production
BIG/Bi:YIG magneto-optical film LPE
Optical circulators and switches
Fiber amplifier ASE noise suppression
Magneto-optical sensors and current transformers
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3-inch SGGG Wafer, Substituted Gadolinium Gallium Garnet, (111) Orientation, EPI Polished, Faraday Rotator Substrate for 400G/800G Optical Module Isolators

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Product Detail
Diameter Tolerance :
76.20 ± 0.3 mm
Model Number :
SCR-2026-08-26-02
Orientation :
(111) ± 0.1°
Lattice Constant :
12.497 ± 0.003 Å
Nominal Siz :
3 inch (Φ76.2 mm)
Flatness (Max-Min) :
≤ 6 μm（ 80% central effective area）
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3-inch SGGG Wafer, Substituted Gadolinium Gallium Garnet, (111) Orientation, EPI Polished, Faraday Rotator Substrate for 400G/800G Optical Module Isolators

ANHUI CRYSTRO CRYSTAL MATERIALS Co., Ltd.

Verified Supplier
8 Years
anhui, hefei
Since 2016
Business Type :
Manufacturer, Exporter
Main Products :
Magneto Optical Crystals, Single Crystal Substrates, Piezoelectric Effect Crystals
Total Annual :
1,100,000-1,500,000
Employee Number :
110~120
Certification Level :
Verified Supplier
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