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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

Name: 3-inch SGGG Wafer, Substituted Gadolinium Gallium Garnet, (111) Orientation, EPI Polished, Faraday Rotator Substrate for 400G/800G Optical Module Isolators
Brand: ANHUI CRYSTRO CRYSTAL MATERIALS Co., Ltd.
SKU: SCR-2026-08-26-02
Price: 110.00 USD
Availability: InStock

Brand Name:	Crystro
Model Number:	SCR-2026-08-26-02
Payment Terms:	T/T, Western Union,

Detail Information

Product Description

Detail Information

Place of Origin:

China

Material:

Substituted Gd₃Ga₅O₁₂

Orientation:

(111) ± 0.1°

Primary Flat:

[-110] ± 2°

Secondary Flat:

[-1-12] ± 2°

Diameter Tolerance:

76.20 ± 0.3 Mm

Nominal Siz:

3 Inch (Φ76.2 Mm)

Lattice Constant:

12.497 ± 0.003 Å

Flatness (Max-Min):

≤ 6 μm（ 80% Central Effective Area）

Highlight:

3-inch SGGG wafer Faraday rotator

Gadolinium Gallium Garnet substrate

EPI polished optical isolator substrate

Product 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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3-inch SGGG Wafer, Substituted Gadolinium Gallium Garnet, (111) Orientation, EPI Polished, Faraday Rotator Substrate for 400G/800G Optical Module Isolators

Brand Name:	Crystro
Model Number:	SCR-2026-08-26-02
Payment Terms:	T/T, Western Union,

Detail Information

Product Description

Detail Information

Place of Origin:

China

Brand Name:

Crystro

Model Number:

SCR-2026-08-26-02

Material:

Substituted Gd₃Ga₅O₁₂

Orientation:

(111) ± 0.1°

Primary Flat:

[-110] ± 2°

Secondary Flat:

[-1-12] ± 2°

Diameter Tolerance:

76.20 ± 0.3 Mm

Nominal Siz:

3 Inch (Φ76.2 Mm)

Lattice Constant:

12.497 ± 0.003 Å

Flatness (Max-Min):

≤ 6 μm（ 80% Central Effective Area）

Payment Terms:

T/T, Western Union,

Highlight:

3-inch SGGG wafer Faraday rotator

Gadolinium Gallium Garnet substrate

EPI polished optical isolator substrate

Product Description

3-inch SGGG Wafer, Substituted Gadolinium Gallium Garnet, (111) Orientation, EPI Polished, Faraday Rotator Substrate for 400G/800G Optical Module Isolators

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