Optical module production discontinued

Optical module production is being discontinued due to obsolescence, material shortages, and evolving industry standards, with repair support and replacement options varying by manufacturer.

Reasons for Discontinuation

Optical modules and components are often discontinued for several reasons: material shortages, supplier consolidations, and technological or regulatory obsolescence. Certain glass types, coatings, or designs may no longer meet current industry standards or compliance requirements, making continued production impractical or non-compliant. Manufacturers may also phase out low-volume or older products to focus on newer, higher-performance technologies .

Manufacturer Notices and Support

For example, Mitsubishi Electric has announced the discontinuation of CC-Link system space optical repeater modules, noting that some parts are now obsolete and repair support will continue only until June 28, 2030. No direct replacement models with identical specifications are available, and customers are advised to consider alternative products that meet interface requirements . Similarly, MELSEC-Q series MELSECNET/H modules are being phased out, with recommendations to transition to the MELSEC iQ-R series or other suitable alternatives .

Maintaining System Performance

When a component becomes unavailable, engineers often rely on reverse engineering and custom optical design to preserve system performance. This involves testing and evaluating existing systems, disassembling components to measure characteristics, and modeling optical systems to replicate performance with available materials. Such approaches help maintain parameters like modulation transfer function (MTF), chromatic aberration correction, and thermal stability, which are critical in applications like medical devices or high-precision instrumentation .

Secondary Market and Used Modules

Discontinued optical modules often reappear in the secondary market. Data centers and other large-scale users may sell modules that are still functional but no longer meet the latest performance requirements. These used modules are typically suitable for budget-constrained or low-speed applications, such as internal monitoring or backup links. Manufacturers may also downgrade slightly non-standard products for resale to balance efficiency and reduce waste .

Recommendations

• Early ordering of remaining stock is advised to ensure availability before final production ceases .
• Evaluate alternative products carefully to confirm compatibility and avoid system issues .
• Consider reverse engineering or custom solutions for critical systems where performance cannot be compromised .
• Explore the secondary market for cost-effective solutions in non-critical applications . By proactively planning for discontinuation, organizations can minimize disruptions, maintain system integrity, and manage costs effectively.