The NYSD mini UWB DML closes the family loop: take the same directly modulated DFB analog engine, shrink thermal/coupling budget, and offer 1310 / 1550 / CWDM wavelengths in a 7 pin butterfly with SMA for spaces where a full microwave shelf will not fit. As a
mini UWB DML laser it keeps 0.1–12 / 1–18 GHz, 10 mW, <10 mA threshold, 55–100 mA bias, RIN −150…−130 dB/Hz, SMSR 30 dB, −40…+70 °C, low RIN, TEC + isolator + monitor PD sealed hermetic. The keyword pair here is mini UWB DML laser + DML laser module: NYSD is the miniaturized SKU of the same DML series used in NY13D/NY15D but with CWDM wavelength option and smaller bill of material.
Use cases are where size beats absolute power: UAV telemetry, man pack T&T, portable delay line kits, lab reference distribution. Because it is a
DML laser module, the host needs no external modulator, no cooled mount—just +5 V TEC loop, bias, RF. 18 GHz Ku option lets a hand carried box replace 18 GHz coax runs that would lose 10+ dB per meter; the laser moves the envelope on fiber with original format fidelity. NEON’s industrial automation blog argues DML wins on simplicity, integration and MTBF; NYSD is the edge case where those virtues must fit a 7 pin envelope.
Optically, NYSD couples 1310/1550/CWDM into SMF 28 via FC/APC; electrical pins mirror NYCMD/NY13D so a designer can swap a mini UWB part onto an existing RoF card. The direct mod principle is unchanged: injection current perturbation → carrier density → gain → optical power, so S21 follows RF to 18 GHz at Iop 60 mA. For UWB radar remoting, the low RIN and +15 dBm input compression keep pulse fidelity; for timing, the narrow DFB mode avoids phase noise walk.
In system terms, a planner chooses NYSD when the microwave DFB link must be field swappable and wavelength flexible but power budget is 10 mW not 100 mW. It complements NY55D (high power DWDM CW), NYCMD (coarse microwave) and NY13D/15D (fixed window): same DML physics, scaled package.
NEON markets the High Speed DFB DML Series as COTS/custom defense grade; NYSD extends that to miniature UWB without losing hermeticity or SMA interface. For integrators, the takeaway is that “mini” does not mean analog compromise—an 18 GHz mini UWB DML laser still meets the RoF SFDR, temperature and isolation rules; it simply omits the higher power PM fiber and 14 pin DWDM harness. That makes it the default where the DML laser module must disappear inside the radio rather than sit in the rack.
