BOSA Bidirectional Optical Subassembly

Name: BOSA Bidirectional Optical Subassembly
Brand: Shenzhen Solar Valley Scitech Development Co., Ltd.

BOSA optical transmitting and receiving assembly (Bi-Directional Optical Sub-Assembly) refers to a single-fiber bidirectional optical device, mainly composed of a transmitting laser, a receiving detector, an adapter, a filter, a base, an isolator and a die sleeve, or TOSA and ROSA integrate the transceiver of the light source (LD and PIN/APD) through the coaxial coupling process, plus components such as splitters and optical fibers. The main function of this bidirectional optical subassembly is to convert electrical signals and optical signals into each other. The BOSA lens assembly usually encapsulates a micro lens in a coaxial metal housing. Microlenses are molded using high-temperature molding, which has the advantages of low production cost and high precision, and is suitable for mass production of aspherical microlenses. BOSA lens assembly is one of the core components of various optical systems. It is mainly used for transmitting coupling and receiving coupling, and converting electrical signals and optical signals to each other.

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Specifications of BOSA Bidirectional Optical Subassembly

BOSA lens assembly parameter table
project	Indicator requirements
1. Material	Use various high and low refractive index optical glass and stainless steel, SF20F and other metal housings
2. Outer diameter	Round OD≤20mm
3. Thickness	according to customers needs
4. Effective focal length	according to customers needs
5. Working distance	according to customers needs
6. Design wavelength	according to customers needs
8. Coating	AR anti-reflection coating R＜0.5% @λnm according to customer requirements
9. Eccentricity	according to customers needs
10. Effective aperture	ED＞90% aspheric area
11. Surface shape	Ultra-high precision Rt≤0.1μm, high precision Rt≤0.5μm, precision Rt≤1μm
12. Surface quality	60-40, 40-20, 20-10, 10-5

Dimension Drawing of BOSA Bidirectional Optical Subassembly

Features of BOSA Bidirectional Optical Subassembly

One-stop customized production: Solar Valley processes BOSA lens components of various sizes and structures according to customer requirements. The optical surface of the lens can be spherical or aspherical. For custom TO CAN laser diode from Solar Valley, RFQ!
Material: Use various high and low refractive index optical glass and metal coaxial shells.
BOSA lens component properties: Solar Valley strictly matches the diameter and center thickness of the BOSA lens component to ensure packaging quality and the center thickness required for high precision. Tianyanggu uses various packaging technologies such as ultraviolet curing, gluing, high-temperature powder curing and other packaging technologies in coaxial shells made of different glass materials and metal materials to accurately control the focal length of the BOSA lens assembly and achieve better transmitting and receiving coupling performance.
Description of product size indicators: Maximum outer dimension of BOSA lens assembly: OD≤φ20mm. BOSA lens assembly can achieve the following accuracy levels according to customer requirements: Ultra-high precision level: surface shape error <0.1μm, surface roughness <0.01μm. High-precision level: Surface error <0.5μm, surface roughness <0.05μm Precision grade: surface error <1μm, surface roughness <0.1μm
Surface defect level: 60-40, 40-20, 20-10, 10-5 according to Customers require production.
Coating: Coating according to customer requirements.