Dorelink
Dorelink
Cisco SFP-10/25G-CSR-S Compatible 10/25G CSR SFP28 850nm 400m Duplex LC MMF Optical Transceiver Module
Duplex LC MMF Optical Transceiver Module Multimode 850nm 25G SFP28 SR 100m
Single Mode 1310nm 25G SFP28 LR 10km Duplex LC SMF Optical Transceiver Module
SMF 1310nm 25G SFP28 ER 40km Duplex LC Single Mode Fiber Optical Transceiver Module
Istanbul serves as the primary data gateway connecting Europe and the Middle East. With the rise of the Marmara region as a tech powerhouse, the demand for high-bandwidth SFP28 modules in Maslak and Levent financial districts has surged. Local enterprises are transitioning from 10G to 25G to future-proof their 5G and Cloud architectures.
Turkey's manufacturing sector in Kocaeli and Bursa is increasingly adopting smart factory solutions. Our 25G SFP28 modules provide the low-latency backbone required for real-time industrial automation, ensuring high-speed data flow between edge computing nodes and centralized control centers.
As the financial heart of Turkey, Istanbul's banking sector requires ultra-reliable storage area networks (SAN). Our 32G SFP28 (SFP+) modules support high-speed Fibre Channel protocols, delivering the zero-packet-loss performance essential for high-frequency trading and secure transaction logging.
Our 25G SFP28 modules are designed using NRZ (Non-Return-to-Zero) modulation technology, providing a cost-effective path for Istanbul-based ISPs to upgrade from 10G. Unlike the more complex 100G (4x25G) deployments, SFP28 offers a single-lane 25Gbps throughput, significantly reducing power consumption and thermal load—critical factors for Istanbul’s high-density urban data centers.
Years Industry Exp.
Production Facility
QC Specialists
R&D Engineers
As a leading Chinese manufacturer, Dorelink Optical Communications leverages the efficiency of the "Middle Corridor" logistics to supply Istanbul with high-performance optical modules at competitive price points. Our 25G SFP28 modules are fully compatible with mainstream brands found in Turkey, including Cisco, Juniper, and Huawei.
With an annual export revenue of USD 18 million, we maintain a vast inventory of 25G SR, LR, Bidi, and CWDM modules, ensuring rapid delivery to Istanbul within 3-5 business days via air freight.
Each module undergoes rigorous temperature cycling and aging tests in our 18,500㎡ facility. This ensures performance stability in Istanbul's varying climate, from humid Bosphorus coastal conditions to inland industrial heat.
From firmware coding for legacy Istanbul switches to customized labeling for Turkish system integrators, our 120 R&D engineers provide end-to-end OEM/ODM support.
Dorelink Optical Communications Co., Ltd. was established in 2016 and specializes in the research, development, manufacturing, and global supply of high-performance optical transceiver products. With a strong focus on optical communication technologies, Dorelink provides reliable fiber optic solutions for data centers, telecommunications networks, enterprise connectivity, and industrial applications.
Dorelink implements a comprehensive quality management system covering raw material inspection (IQC), production monitoring (IPQC), final quality control (FQC), and Reliability Testing.
Independent optical module design, hardware development, and firmware optimization. Our team releases over 85 innovative models annually.
As Istanbul expands its 5G network, our 25G SFP28 Bidi modules are the ideal solution for CPRI/eCPRI fronthaul. By utilizing a single strand of fiber, Istanbul ISPs can double their capacity without digging new trenches in the historic city center.
Data centers in the Gebze industrial zone utilize our 25G CWDM and DWDM SFP28 modules to maximize fiber utilization across metropolitan area networks (MAN), enabling seamless interconnectivity between distributed cloud nodes.
Looking for a reliable partner in Istanbul?
Send Inquiry NowA: Yes, our Cisco-compatible SFP-10/25G-CSR-S and SR modules are programmed with specific EEPROM codes to ensure seamless "plug-and-play" performance with Cisco Nexus and Catalyst series switches used throughout Istanbul.
A: We offer solutions ranging from 100m (SR) for intra-rack connectivity up to 40km (ER) and even 80km via LWDM for spanning across the European and Asian sides of Istanbul.
A: Absolutely. Our SFP28 32G FC modules are optimized for low-latency SAN environments, compatible with Brocade and Cisco MDS directors commonly found in Turkish enterprise data centers.
A: Yes, our R&D team can provide custom coding for specific DDM (Digital Diagnostic Monitoring) thresholds and compatibility strings to meet any localized requirement.
Bidirectional Single Mode SFP28 25G BiDi 10km Simplex LC SMF Optical Transceiver Module
Simplex LC Single Mode SFP28 25G BiDi 20km Bidirectional SMF Optical Transceiver Module
1270nm/1310nm Bidirectional Single Fiber 25G BiDi SFP28 40km Simplex LC SMF Optical Transceiver Module
Single Mode 25G CWDM SFP28 Transceiver 10km Duplex LC SMF Optical Transceiver Module
Duplex LC SMF Optical Transceiver Module Single Mode 25G SFP28 CWDM Transceiver 30km
Duplex LC SMF Optical Module Single Mode SFP28 25G DWDM Transceiver 10km
Single Mode Duplex LC SMF SFP28 Optical Module 25G LWDM Transceiver 40km
Cisco SFP-25G-SR-S Compatible Duplex LC MMF 850nm 25G SFP28 100m Optical Transceiver Module